chore: rename multiple files to improve importability and module structure

m01_agent_introduction/agent-demo.py

@@ -0,0 +1,15 @@
+# 让ai说一句话
+from config import OPENAI_API_KEY
+from langchain_openai import ChatOpenAI
+
+# 配置deepseek
+llm = ChatOpenAI(
+    model="deepseek-chat",
+    api_key=OPENAI_API_KEY,
+    # 注:在.env里把OPENAI_API_KEY改成你自己的api-key即可
+    base_url="https://api.deepseek.com"
+)
+
+# 调用模型
+response = llm.invoke("你好呀")
+print(response.content)