Deprecate Spectacle recipes

[homebysix]

This PR updates the Spectacle download source to GitHub, and also deprecates the Spectacle recipes since the software is no longer being actively developed (details).

Verbose recipe run output:

% autopkg run -vvq 'ECzarny/Spectacle.download.recipe'
Processing ECzarny/Spectacle.download.recipe...
WARNING: ECzarny/Spectacle.download.recipe is missing trust info and FAIL_RECIPES_WITHOUT_TRUST_INFO is not set. Proceeding...
GitHubReleasesInfoProvider
{'Input': {'asset_regex': 'Spectacle.*\\.zip',
           'github_repo': 'eczarny/spectacle'}}
GitHubReleasesInfoProvider: No value supplied for CURL_PATH, setting default value of: /usr/bin/curl
GitHubReleasesInfoProvider: No value supplied for GITHUB_URL, setting default value of: https://api.github.com
GitHubReleasesInfoProvider: No value supplied for GITHUB_TOKEN_PATH, setting default value of: ~/.autopkg_gh_token
GitHubReleasesInfoProvider: Matched regex 'Spectacle.*\.zip' among asset(s): Spectacle+1.2.zip
GitHubReleasesInfoProvider: Selected asset 'Spectacle+1.2.zip' from release 'Spectacle 1.2'
{'Output': {'asset_created_at': '2022-01-15T14:08:18Z',
            'asset_url': 'https://api.github.com/repos/eczarny/spectacle/releases/assets/54051774',
            'release_notes': 'This is the last stable release of Spectacle.',
            'url': 'https://github.com/eczarny/spectacle/releases/download/1.2/Spectacle%2B1.2.zip',
            'version': '1.2'}}
URLDownloader
{'Input': {'filename': 'Spectacle-1.2.zip',
           'url': 'https://github.com/eczarny/spectacle/releases/download/1.2/Spectacle%2B1.2.zip'}}
URLDownloader: No value supplied for prefetch_filename, setting default value of: False
URLDownloader: No value supplied for CHECK_FILESIZE_ONLY, setting default value of: False
URLDownloader: Storing new Last-Modified header: Sat, 15 Jan 2022 14:08:20 GMT
URLDownloader: Storing new ETag header: "0x8D9D8307C086CBD"
URLDownloader: Downloaded ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip
{'Output': {'download_changed': True,
            'etag': '"0x8D9D8307C086CBD"',
            'last_modified': 'Sat, 15 Jan 2022 14:08:20 GMT',
            'pathname': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip',
            'url_downloader_summary_result': {'data': {'download_path': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip'},
                                              'summary_text': 'The following '
                                                              'new items were '
                                                              'downloaded:'}}}
EndOfCheckPhase
{'Input': {}}
{'Output': {}}
Unarchiver
{'Input': {'archive_path': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip',
           'destination_path': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications',
           'purge_destination': True}}
Unarchiver: No value supplied for USE_PYTHON_NATIVE_EXTRACTOR, setting default value of: False
Unarchiver: Guessed archive format 'zip' from filename Spectacle-1.2.zip
Unarchiver: Unarchived ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip to ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications
{'Output': {}}
CodeSignatureVerifier
{'Input': {'input_path': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app',
           'requirement': 'anchor apple generic and identifier '
                          '"com.divisiblebyzero.Spectacle" and (certificate '
                          'leaf[field.1.2.840.113635.100.6.1.9] /* exists */ '
                          'or certificate 1[field.1.2.840.113635.100.6.2.6] /* '
                          'exists */ and certificate '
                          'leaf[field.1.2.840.113635.100.6.1.13] /* exists */ '
                          'and certificate leaf[subject.OU] = P8TAT4Q25S)'}}
CodeSignatureVerifier: Verifying code signature...
CodeSignatureVerifier: Deep verification enabled...
CodeSignatureVerifier: Strict verification not defined. Using codesign defaults...
CodeSignatureVerifier: ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app: valid on disk
CodeSignatureVerifier: ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app: satisfies its Designated Requirement
CodeSignatureVerifier: ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app: explicit requirement satisfied
CodeSignatureVerifier: Signature is valid
{'Output': {}}
Versioner
{'Input': {'input_plist_path': '~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app/Contents/Info.plist',
           'plist_version_key': 'CFBundleShortVersionString'}}
Versioner: No value supplied for skip_single_root_dir, setting default value of: False
Versioner: Found version 1.2 in file ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/Spectacle/Applications/Spectacle.app/Contents/Info.plist
{'Output': {'version': '1.2'}}
Receipt written to ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/receipts/Spectacle.download-receipt-20241226-173600.plist

The following new items were downloaded:
    Download Path
    -------------
    ~/Library/AutoPkg/Cache/com.github.jaharmi.download.Spectacle/downloads/Spectacle-1.2.zip