Beets.db collection adapter

[DuncanGJ]

Use case: user uses beets as the source of truth to manage, organize and track their music collection.

Benefits:

• beets is a common management tool for music libraries
• For beets users the beets.db represents the source of truth rather than the file system
• interfacing with the beets.db could improve the quality of sync results, and results in a sync that more accurately represents the user's music library

[jvgomg]

Good thinking. This was went down this path briefly before choosing to hit Navidrome for my collection.

I'm presuming this would be a case of podkit having file access to the beets.db or invoking the beets CLI tool.