[NewFeture]add ep rollout model init and update/clear ep buffer (#3927)

* add ep rollout model init && add deep update/clear

* fix test

fastdeploy/rl/rollout_config.py

@@ -24,13 +24,13 @@ class RolloutModelConfig:
         max_model_len: int = 32768,
         tensor_parallel_size: int = 4,
         dynamic_load_weight: bool = True,
-        load_strategy: str = "ipc_snapshot",
+        load_strategy: str = "meta",
         enable_mm: bool = False,
         # Default values for all other parameters
         max_num_seqs: int = 34,
         total_block_num: int = 2000,
         block_size: int = 64,
-        engine_worker_queue_port: int = 9923,
+        engine_worker_queue_port: str = "8002",
         device_ids: str = "0",
         dtype: str = "bfloat16",
         enc_dec_block_num: int = 1,