feat(openai): 新增 v2 版机器人对话相关接口

test/SKIT.FlurlHttpClient.Wechat.OpenAI.UnitTests/ModelSamples/Chatbot/Dialog/AIBotResponse.json

@@ -12,23 +12,6 @@
     "intent_confirm_status": "",
     "is_default_answer": false,
     "list_options": false,
-    "msg": [
-        {
-            "ans_node_id": 17130001,
-            "ans_node_name": "猜拳",
-            "confidence": 1,
-            "content": "2",
-            "debug_info": "",
-            "event": "",
-            "list_options": false,
-            "msg_type": "text",
-            "resp_title": "开始猜拳",
-            "scene_status": "",
-            "session_id": "",
-            "status": "FAQ",
-            "take_options_only": false
-        }
-    ],
     "msg_id": "31904d53",
     "ret": 0,
     "scene_status": "",