improve: introduce isort for linting Python imports (#1983)

api/core/third_party/spark/spark_llm.py

@@ -4,12 +4,11 @@ import hashlib
 import hmac
 import json
 import queue
-from typing import Optional
-from urllib.parse import urlparse
 import ssl
 from datetime import datetime
 from time import mktime
-from urllib.parse import urlencode
+from typing import Optional
+from urllib.parse import urlencode, urlparse
 from wsgiref.handlers import format_date_time
 
 import websocket