Move type annotations into files.

Library/Homebrew/unpack_strategy/dmg.rb

Library/Homebrew/unpack_strategy/executable.rb

Library/Homebrew/unpack_strategy/fossil.rb

Library/Homebrew/unpack_strategy/generic_unar.rb

Library/Homebrew/unpack_strategy/git.rb

Library/Homebrew/unpack_strategy/gzip.rb

Library/Homebrew/unpack_strategy/jar.rb

Library/Homebrew/unpack_strategy/lha.rb

Library/Homebrew/unpack_strategy/lua_rock.rb

Library/Homebrew/unpack_strategy/lzip.rb

Library/Homebrew/unpack_strategy/lzma.rb

Library/Homebrew/unpack_strategy/mercurial.rb

Library/Homebrew/unpack_strategy/microsoft_office_xml.rb

Library/Homebrew/unpack_strategy/otf.rb

Library/Homebrew/unpack_strategy/p7zip.rb

Library/Homebrew/unpack_strategy/pax.rb

Library/Homebrew/unpack_strategy/pkg.rb

Library/Homebrew/unpack_strategy/rar.rb

...ry/Homebrew/unpack_strategy/self_extracting_executable.rb

Library/Homebrew/unpack_strategy/sit.rb