Apply custom transformers globally

lib/models/arguments.rb

@@ -7,16 +7,23 @@ class Arguments
 
   def initialize(provider, command, issue_content)
     @args = argument_class(provider, command, issue_content)
+    @custom_transformers = custom_transformers(command)
   end
 
   def argument_class(provider, command, issue_content)
     provider.module.const_get(command.classify).new(issue_content, command)
   end
 
+  def custom_transformers(command)
+    command.options&.dig("custom-transformers")&.split(" ") || Dir.glob("transformers/**/*.rb")
+  end
+
   def to_output
     arguments = @args.to_a
     return if arguments.blank?
 
+    arguments.concat(["--custom-transformers", *@custom_transformers]) if @custom_transformers.length.positive?
+
     set_output(
       "args",
       arguments.map do |a|