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/models/plugins.py

@@ -4,7 +4,7 @@ from dataclasses import dataclass
 @dataclass
 class Plugin:
     name: str
-    description: str
     active: bool
     settings: dict
+    extra: dict