add plugin mode

pilot/scene/base.py

@@ -1,8 +1,9 @@
 from enum import Enum
 
+
 class ChatScene(Enum):
     ChatWithDb = "chat_with_db"
     ChatExecution = "chat_execution"
     ChatKnowledge = "chat_default_knowledge"
     ChatNewKnowledge = "chat_new_knowledge"
-    ChatNormal = "chat_normal"
+    ChatNormal = "chat_normal"