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

api/tasks/annotation/batch_import_annotations_task.py

@@ -1,17 +1,17 @@
-import json
 import logging
 import time
 
 import click
 from celery import shared_task
+from langchain.schema import Document
+from werkzeug.exceptions import NotFound
+
 from core.index.index import IndexBuilder
 from extensions.ext_database import db
 from extensions.ext_redis import redis_client
-from langchain.schema import Document
 from models.dataset import Dataset
 from models.model import App, AppAnnotationSetting, MessageAnnotation
 from services.dataset_service import DatasetCollectionBindingService
-from werkzeug.exceptions import NotFound
 
 
 @shared_task(queue='dataset')