[Feature] support seed parameter (#3161)

* support seed

* fix

* add SamplingMetadata seed test

* The next_tokens values are inconsistent!

* add air and rejection seed test

* fix

* add SamplingParams seed test

* fix seed=0

* Default to defualt

* fix

* fix args_utils

* fix review

* fix review

* fix

* fix

* add xpu,gcu,iluvatar support seed

* fix

fastdeploy/config.py

@@ -122,6 +122,7 @@ class ModelConfig:
         self.enable_mm = False
         self.enable_redundant_experts = False
         self.redundant_experts_num = 0
+        self.seed = 0
         self.quantization = None
         for key, value in args.items():
             if hasattr(self, key):