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/artist.py

@@ -44,6 +44,13 @@ class Artist:
     date: int
     duration: int
     genres: list[dict[str, str]]
+    genrehashes: list[str]
     name: str
     trackcount: int
     is_favorite: bool
+    extra: dict
+
+    image: str = ""
+
+    def __post_init__(self):
+        self.image = self.artisthash + ".webp"