[Frontend] Move CLI code into vllm.cmd package (#12971)

vllm/entrypoints/openai/api_server.py

@@ -901,7 +901,8 @@ async def run_server(args, **uvicorn_kwargs) -> None:
 
 if __name__ == "__main__":
     # NOTE(simon):
-    # This section should be in sync with vllm/scripts.py for CLI entrypoints.
+    # This section should be in sync with vllm/entrypoints/cli/main.py for CLI
+    # entrypoints.
     parser = FlexibleArgumentParser(
         description="vLLM OpenAI-Compatible RESTful API server.")
     parser = make_arg_parser(parser)