feat：为私聊增加checker和次级回复，更多动作

src/chat/brain_chat/PFC/conversation_info.py

@@ -0,0 +1,10 @@
+from typing import Optional
+
+
+class ConversationInfo:
+    def __init__(self):
+        self.done_action = []
+        self.goal_list = []
+        self.knowledge_list = []
+        self.memory_list = []
+        self.last_successful_reply_action: Optional[str] = None