Integrate with OpenSubsonic API extensions

[dweymouth]

Meta-issue to keep track of all the OpenSubsonic integrations:

• [x] Multiple album artists (#259)
• [x] Multiple album genres (#259)
• [x] Multiple track artists (#259)
• [x] Release type for albums (#273)
• [x] Comment for tracks (#266)
• [x] ReleaseDate / OriginalReleaseDate (#351)
• [ ] MusicBrainz ID link for albums
• [x] Last played date (#424)
• [x] Composer (#409)
• [ ] Contributors tags (conductor, lyricist, etc)
• [ ] timeOffset for seeks with transcoding (#311)

[dweymouth]

Requires a fix for https://github.com/fyne-io/fyne/issues/4336 to display multiple artist names inline

Nevermind, it's working with a custom re-implementation for now