[feat]: General diffusers adapter backend to run diffusion models (#2724)

Signed-off-by: Huang, Zeyu <11222265+fhfuih@users.noreply.github.com>

vllm_omni/diffusion/models/diffusers_adapter/__init__.py

@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+"""Diffusers backend adapter for vLLM-Omni."""
+
+from vllm_omni.diffusion.models.diffusers_adapter.pipeline_diffusers_adapter import (
+    DiffusersAdapterPipeline,
+)
+
+__all__ = [
+    "DiffusersAdapterPipeline",
+]