Add support for the HOMEBREW_ASK environment variable

Library/Homebrew/cmd/install.rb

@@ -306,7 +306,7 @@ module Homebrew
         Install.check_cc_argv(args.cc)
 
         # Showing dependencies and required size to install
-        if args.ask?
+        if args.ask? || !Homebrew::EnvConfig.ask?
           ohai "Looking for dependencies..."
           package = []
           bottle_size = 0

Library/Homebrew/env_config.rb

@@ -500,6 +500,10 @@ module Homebrew
                      "of build provenance for bottles from homebrew-core.",
         boolean:     true,
       },
+      HOMEBREW_ASK:                    {
+        description: "If set, pass `--ask`to all formula install commands.",
+        boolean:     true,
+      },
       SUDO_ASKPASS:                              {
         description: "If set, pass the `-A` option when calling `sudo`(8).",
       },

Library/Homebrew/sorbet/rbi/dsl/homebrew/env_config.rbi

@@ -315,5 +315,8 @@ module Homebrew::EnvConfig
 
     sig { returns(T::Boolean) }
     def verify_attestations?; end
+
+    sig { returns(T::Boolean) }
+    def ask?; end
   end
 end