enhancement: introduce Ruff for Python linter for reordering and removing unused imports with automated pre-commit and sytle check (#2366)

api/schedule/clean_embedding_cache_task.py

@@ -1,13 +1,14 @@
 import datetime
 import time
 
-import app
 import click
-from extensions.ext_database import db
 from flask import current_app
-from models.dataset import Embedding
 from werkzeug.exceptions import NotFound
 
+import app
+from extensions.ext_database import db
+from models.dataset import Embedding
+
 
 @app.celery.task(queue='dataset')
 def clean_embedding_cache_task():