[Feature] support ep in mixed mode (#3001)

* [LLM] support ep

* Update worker_process.py

* Update expert_service.py

* Update worker_process.py

* format files

fastdeploy/engine/config.py

@@ -225,6 +225,9 @@ class Config:
         else:
             self.is_master = False
 
+        if self.tensor_parallel_size <= self.worker_num_per_node:
+            self.is_master = True
+
         import paddle
 
         self.paddle_commit_id = paddle.version.commit