audio/fooyin: New port: foobar2000 inspired audio player

A customisable music player inspired by foobar2000. It offers a growing
list of widgets to manage and play your local music collection. It's
extensible using a plugin system and many widgets make use of FooScript
to offer an even deeper level of control. A layout editing mode enables
the entire user interface to be customised, starting from a blank slate
or a preset layout.