Refactor some tag handling into a Utils::Bottles::Tag class

Library/Homebrew/dev-cmd/bottle.rb

Library/Homebrew/dev-cmd/dispatch-build-bottle.rb

Library/Homebrew/dev-cmd/unbottled.rb

Library/Homebrew/extend/os/mac/utils/bottles.rb

Library/Homebrew/os/mac/version.rb

Library/Homebrew/software_spec.rb

Library/Homebrew/test/formula_spec.rb

Library/Homebrew/test/os/mac/version_spec.rb

Library/Homebrew/test/software_spec/bottle_spec.rb

Library/Homebrew/test/support/fixtures/testball_bottle.rb

.../Homebrew/test/support/fixtures/testball_bottle_cellar.rb

Library/Homebrew/test/utils/bottles/collector_spec.rb

Library/Homebrew/test/utils/bottles/tag_spec.rb

Library/Homebrew/utils/bottles.rb