audio/supysonic: New port: Python implementation of the Subsonic server API

Supysonic is a Python implementation of the Subsonic server API.

Current supported features are:

• browsing (by folders or tags)
• streaming of various audio files formats
• transcoding
• user or random playlists
• cover art
• starred tracks/albums and ratings
• lastfm scrobbling
• Jukebox mode

WWW: https://supysonic.readthedocs.io/

PR: 270751