combine userdata and swing db into one

+ port populate to new db interface
+ add genrehashes and hash info to tracks
+ properly structure new db table files
+ move helpers to dedicated utils file
+ move settings from db to config file
+ move artists, albums, auth and favorites endpoint to new db interface
+ use folder store to index filepaths
+ paginate favorite pages
+ 56 moretiny changes 😅

app/db/sqlite/lastfm/similar_artists.py

@@ -16,7 +16,7 @@ class SQLiteLastFMSimilarArtists:
         sql = """INSERT OR REPLACE INTO lastfm_similar_artists(artisthash, similar_artists) VALUES(?,?)"""
 
         with SQLiteManager(userdata_db=True) as cur:
-            cur.execute(sql, (artist.artisthash, artist.similar_artist_hashes))
+            cur.execute(sql, (artist.artisthash, artist.similar_artists))
             cur.close()
 
     @classmethod