[CORE] Adding support for insertion of soft-tuned prompts (#4645)

Co-authored-by: Swapnil Parekh <swapnilp@ibm.com>
Co-authored-by: Joe G <joseph.granados@h2o.ai>
Co-authored-by: Antoni Baum <antoni.baum@protonmail.com>

tests/spec_decode/e2e/conftest.py

@@ -13,6 +13,7 @@ from vllm.lora.request import LoRARequest
 from vllm.model_executor.utils import set_random_seed
 from vllm.multimodal import MultiModalDataDict
 from vllm.outputs import RequestOutput
+from vllm.prompt_adapter.request import PromptAdapterRequest
 from vllm.sampling_params import SamplingParams
 from vllm.sequence import Logprob
 from vllm.usage.usage_lib import UsageContext
@@ -92,6 +93,7 @@ class AsyncLLM:
         use_tqdm: bool = True,
         lora_request: Optional[LoRARequest] = None,
         multi_modal_data: Optional[MultiModalDataDict] = None,
+        prompt_adapter_request: Optional[PromptAdapterRequest] = None
     ) -> List[RequestOutput]:
 
         if prompts is None: