Refactor list_models function to remove api_key dependency for improved simplicity

.gitignore

@@ -0,0 +1 @@
+test*

app.py

@@ -320,7 +320,7 @@ async def root():
     return {"message": "OpenAI API Proxy服务已启动 连接至DeepSider API"}
 
 @app.get("/v1/models")
-async def list_models(api_key: str = Depends(verify_api_key)):
+async def list_models():
     """列出可用的模型"""
     models = []
     for openai_model, _ in MODEL_MAPPING.items():