Replace use of logger in bin/sequel

Logger is moving from stdlib to bundled gems in Ruby 3.5, and will
start warning on Ruby 3.4. To prevent warnings and later errors
for users running bundle exec bin/sequel, this switches to a basic
logging approach. Note that this does not support calling
Database#sql_log_level= with a value other than :debug, :info,
:warn, or :error, but hopefully nobody is doing that in code
using bin/sequel.

One advantage to this change is it results in slightly less
cluttered log output.

CHANGELOG

@@ -1,5 +1,7 @@
 === master
 
+* Remove use of logger library in bin/sequel (jeremyevans)
+
 * Support :connect_opts_proc Database option for late binding options (jeremyevans) (#2164)
 
 === 5.81.0 (2024-06-01)

bin/sequel

@@ -18,6 +18,21 @@ load_dirs = []
 exclusive_options = []
 loggers = []
 
+logger_class = Class.new do
+  def initialize(device)
+    @device = device
+  end
+
+  def debug(msg)
+  end
+
+  [:info, :warn, :error].each do |meth|
+    define_method(meth) do |msg|
+      @device.puts("#{Time.now.strftime('%Y-%m-%d %T')} #{meth.to_s.upcase}: #{msg}")
+    end
+  end
+end
+
 options = OptionParser.new do |opts|
   opts.banner = "Sequel: The Database Toolkit for Ruby"
   opts.define_head "Usage: sequel [options] <uri|path> [file]"
@@ -61,17 +76,15 @@ options = OptionParser.new do |opts|
   end
 
   opts.on("-E", "--echo", "echo SQL statements") do
-    require 'logger'
-    loggers << Logger.new($stdout)
+    loggers << logger_class.new($stdout)
   end
 
   opts.on("-I", "--include dir", "specify $LOAD_PATH directory") do |v|
     $: << v
   end
 
   opts.on("-l", "--log logfile", "log SQL statements to log file") do |v|
-    require 'logger'
-    loggers << Logger.new(v)
+    loggers << logger_class.new(File.open(v, 'a'))
   end
 
   opts.on("-L", "--load-dir DIR", "loads all *.rb under specifed directory") do |v|