Report music service, URL, and Spotify ID to ListenBrainz.
ListenBrainz accepts the music service in listen reports, in both a canonical domain format and a human-readable display name format. This commit makes Strawberry report both, for maximum flexibility. I've also set it up to report a shareable track URL for supported streaming services. I am already using this data in my homepage's "Now Playing" widget.
Fixes#1768
