feat: Implement transform pipeline providers

#364

#365 #363 #364

So that it can be used for transformer. Component (client/source) inherit from init class

feat: transform pipeline

As long as it conforms to user stage type. Preserve backwards compatibility

Not working. Tests fail and compiler has errors.

#400

refactor: Cleanup and consolidate listenbrainz listen parsing

Consolidtes logic for parsing lz listen data structure

feat(rocksky): Implement Rocksky Source/Client

Now playing accuracy improvement

* Aggressively start Now Playing update (based on reported) but aggressibely end, based on stale/orphaned, so updates are early but not often
* Refactor update thresholds to use scrobble client behavior
* LFM and LZ use track duration as "time visible" for Now Playing, don't re-update during that time period
* Add thresholds to logging for easier troubleshooting

#395

feat: Implement teal.fm as source/client

feat(subsonic): Add repeat detection