Library Sync

[oskvr37]

Synchronize user's library with directory on local device

[oskvr37]

Database would be nice to track downloaded items, or just API cache to avoid repeating requests.

Currently when calling tiddl fav download it will fetch all resources, for example when user would add one track to favorites and run tiddl, tiddl will go through all favorites anyway and won't stop after downloading just this one track.
It will skip already downloaded tracks, but it will fetch the api anyway.

• EDIT
  I have added Tidal API cache in ✨ add Tidal API cache #84 - some endpoints expire after hour, some never do.
  Maybe add tracking of resource id in files to prevent API over fetching.
  Or single json file that maps resource id to file path, skipping existing files would be faster too.