rubocop: Use Sorbet/StrictSigil as it's better than comments

- Previously I thought that comments were fine to discourage people from
  wasting their time trying to bump things that used `undef` that Sorbet
  didn't support. But RuboCop is better at this since it'll complain if
  the comments are unnecessary.

- Suggested in Homebrew#18018 (comment).

- I've gone for a mixture of `rubocop:disable` for the files that can't
  be `typed: strict` (use of undef, required before everything else, etc)
  and `rubocop:todo` for everything else that should be tried to make
  strictly typed. There's no functional difference between the two as
  `rubocop:todo` is `rubocop:disable` with a different name.

- And I entirely disabled the cop for the docs/ directory since
  `typed: strict` isn't going to gain us anything for some Markdown
  linting config files.

- This means that now it's easier to track what needs to be done rather
  than relying on checklists of files in our big Sorbet issue:

```shell
$ git grep 'typed: true # rubocop:todo Sorbet/StrictSigil' | wc -l
    268
```

- And this is confirmed working for new files:

```shell
$ git status
On branch use-rubocop-for-sorbet-strict-sigils
Untracked files:
  (use "git add <file>..." to include in what will be committed)
        Library/Homebrew/bad.rb
        Library/Homebrew/good.rb

nothing added to commit but untracked files present (use "git add" to track)

$ brew style
Offenses:

bad.rb:1:1: C: Sorbet/StrictSigil: Sorbet sigil should be at least strict got true.
^^^^^^^^^^^^^

1340 files inspected, 1 offense detected
```

Library/.rubocop.yml

@@ -274,11 +274,11 @@ Sorbet/RedundantExtendTSig:
 
 Sorbet/StrictSigil:
   Enabled: true
-  inherit_mode:
-    override:
-      - Include
-  Include:
-    - "**/*.rbi"
+  Exclude:
+    - "Taps/**/*"
+    - "/**/{Formula,Casks}/**/*.rb"
+    - "**/{Formula,Casks}/**/*.rb"
+    - "Homebrew/test/**/*.rb"
 
 Sorbet/TrueSigil:
   Enabled: true

Library/Homebrew/PATH.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "forwardable"

Library/Homebrew/api.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "api/analytics"

Library/Homebrew/api/analytics.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Homebrew

Library/Homebrew/api/cask.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "extend/cachable"

Library/Homebrew/api/download.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "downloadable"

Library/Homebrew/api/formula.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "extend/cachable"

Library/Homebrew/build.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 # This script is loaded by formula_installer as a separate instance.

Library/Homebrew/build_environment.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 # Settings for the build environment.

Library/Homebrew/build_options.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 # Options for a formula build.

Library/Homebrew/bundle_version.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "system_command"

Library/Homebrew/cache_store.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "json"

Library/Homebrew/cask/artifact/abstract_artifact.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/artifact/abstract_flight_block.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"

Library/Homebrew/cask/artifact/abstract_uninstall.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "timeout"

Library/Homebrew/cask/artifact/binary.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/symlinked"

Library/Homebrew/cask/artifact/installer.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"

Library/Homebrew/cask/artifact/keyboard_layout.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/moved"

Library/Homebrew/cask/artifact/manpage.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/symlinked"

Library/Homebrew/cask/artifact/mdimporter.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/moved"

Library/Homebrew/cask/artifact/moved.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/relocated"

Library/Homebrew/cask/artifact/pkg.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "plist"

Library/Homebrew/cask/artifact/qlplugin.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/moved"

Library/Homebrew/cask/artifact/relocated.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"

Library/Homebrew/cask/artifact/stage_only.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_artifact"

Library/Homebrew/cask/artifact/symlinked.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/relocated"

Library/Homebrew/cask/artifact/uninstall.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_uninstall"

Library/Homebrew/cask/artifact/zap.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/abstract_uninstall"

Library/Homebrew/cask/artifact_set.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/audit.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/auditor.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/audit"

Library/Homebrew/cask/cask.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/cask_loader.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/cache"

Library/Homebrew/cask/caskroom.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "utils/user"

Library/Homebrew/cask/config.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "json"

Library/Homebrew/cask/download.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "downloadable"

Library/Homebrew/cask/dsl.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/dsl/base.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/utils"

Library/Homebrew/cask/dsl/caveats.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/dsl/conflicts_with.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "delegate"

Library/Homebrew/cask/dsl/container.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "unpack_strategy"

Library/Homebrew/cask/dsl/depends_on.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "delegate"

Library/Homebrew/cask/dsl/version.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/exceptions.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/installer.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "attrable"

Library/Homebrew/cask/list.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/artifact/relocated"

Library/Homebrew/cask/macos.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module OS

Library/Homebrew/cask/metadata.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/migrator.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/cask_loader"

Library/Homebrew/cask/pkg.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "cask/macos"

Library/Homebrew/cask/quarantine.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "development_tools"

Library/Homebrew/cask/reinstall.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/staged.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "utils/user"

Library/Homebrew/cask/tab.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "tab"

Library/Homebrew/cask/uninstall.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 module Cask

Library/Homebrew/cask/url.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "source_location"

Library/Homebrew/cask/utils.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "utils/user"

Library/Homebrew/cask_dependent.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "requirement"

Library/Homebrew/caveats.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "language/python"

Library/Homebrew/cleaner.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 # Cleans a newly installed keg.

Library/Homebrew/cleanup.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "utils/bottles"

Library/Homebrew/cli/args.rb

@@ -1,4 +1,4 @@
-# typed: true # This cannot be `# typed: strict` due to the use of `undef`.
+# typed: true # rubocop:disable Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "ostruct"

Library/Homebrew/cli/named_args.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "delegate"

Library/Homebrew/cmd/deps.rb

@@ -1,4 +1,4 @@
-# typed: true
+# typed: true # rubocop:todo Sorbet/StrictSigil
 # frozen_string_literal: true
 
 require "abstract_command"