Subsonic fixes

[phw]

Subsonic changes:

• Use getAlbumList2 instead of getAlbumList. This fetches albums by tags, not by directory structure, and I think this is better supported. E.g. Navidrome supports both, but getAlbumList uses fake directories based on tags. And Funkwhale only supports getAlbumList2
• Use album["name"] instead of album["album"] for the name. While some clients return both the Subsonic docs only mention name as the key
• Avoid the call to getAlbumInfo2 if the release MBID was already returned by the calls to getAlbumList2 or getAlbum. This avoids an API call and makes things compatible if getAlbumList2 is not supported (e.g. Funkwhale).

With these changes the subsonic command becomes compatible with Funkwhale with my patch for OpenSubsonic at https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2695 applied

[mayhem]

Thanks!