feat(beatmap,score): update beatmaps from Bancho & deleting scores (#50)

New API:

- DELETE /api/private/score/{score_id}: delete a score
- POST /api/private/beatmapsets/{beatmapset_id}/sync: request for syncing a beatmapset

New configuration:

- OLD_SCORE_PROCESSING_MODE

app/router/private/__init__.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from app.config import settings
 
-from . import audio_proxy, avatar, beatmapset_ratings, cover, oauth, relationship, team, username  # noqa: F401
+from . import audio_proxy, avatar, beatmapset, cover, oauth, relationship, score, team, username  # noqa: F401
 from .router import router as private_router
 
 if settings.enable_totp_verification: