refactor: The first refactored version for sdk release (#907)

Co-authored-by: chengfangyin2 <chengfangyin3@jd.com>

dbgpt/app/scene/chat_normal/chat.py

@@ -0,0 +1,30 @@
+from typing import Dict
+
+from dbgpt.app.scene import BaseChat, ChatScene
+from dbgpt._private.config import Config
+
+from dbgpt.util.tracer import trace
+
+CFG = Config()
+
+
+class ChatNormal(BaseChat):
+    chat_scene: str = ChatScene.ChatNormal.value()
+
+    """Number of results to return from the query"""
+
+    def __init__(self, chat_param: Dict):
+        """ """
+        chat_param["chat_mode"] = ChatScene.ChatNormal
+        super().__init__(
+            chat_param=chat_param,
+        )
+
+    @trace()
+    async def generate_input_values(self) -> Dict:
+        input_values = {"input": self.current_user_input}
+        return input_values
+
+    @property
+    def chat_type(self) -> str:
+        return ChatScene.ChatNormal.value