Add RBI file for Formula delegate methods

Library/Homebrew/formula.rbi

@@ -0,0 +1,54 @@
+# typed: strict
+
+# This file provides definitions for Forwardable#delegate, which is currently not supported by Sorbet.
+
+class Formula
+  def bottle_unneeded?; end
+  def bottle_disabled?; end
+  def bottle_disable_reason; end
+  def bottle_defined?; end
+  def bottle_tag?; end
+  def bottled?; end
+  def bottle_specification; end
+  def downloader; end
+
+  def desc; end
+  def license; end
+  def homepage; end
+  def livecheck; end
+  def livecheckable?; end
+  def service?; end
+  def version; end
+
+  def resource; end
+  def deps; end
+  def uses_from_macos_elements; end
+  def requirements; end
+  def cached_download; end
+  def clear_cache; end
+  def options; end
+  def deprecated_options; end
+  def deprecated_flags; end
+  def option_defined?; end
+  def compiler_failures; end
+
+  def plist_manual; end
+  def plist_startup; end
+  def pour_bottle_check_unsatisfied_reason; end
+  def keg_only_reason; end
+  def deprecated?; end
+  def deprecation_date; end
+  def deprecation_reason; end
+  def disabled?; end
+  def disable_date; end
+  def disable_reason; end
+
+  def pinnable?; end
+  def pinned?; end
+  def pinned_version; end
+  def pin; end
+  def unpin; end
+
+  def env; end
+  def conflicts; end
+end