[core] add sleep and wake up endpoint and v1 support (#12987)

Signed-off-by: youkaichao <youkaichao@gmail.com>
Signed-off-by: cennn <2523403608@qq.com>
Co-authored-by: cennn <2523403608@qq.com>

vllm/v1/engine/core.py

@@ -213,6 +213,12 @@ class EngineCore:
     def reset_prefix_cache(self):
         self.scheduler.reset_prefix_cache()
 
+    def sleep(self, level: int = 1):
+        self.model_executor.sleep(level)
+
+    def wake_up(self):
+        self.model_executor.wake_up()
+
     def add_lora(self, lora_request: LoRARequest) -> None:
         self.model_executor.add_lora(lora_request)