[Feature] Support online inference (#64)

Signed-off-by: Gaohan123 <gaohan19@huawei.com>

docs/user_guide/examples/offline_inference/qwen2_5_omni.md

@@ -0,0 +1,64 @@
+# Offline Example of vLLM-omni for Qwen2.5-omni
+
+Source <https://github.com/vllm-project/vllm-omni/tree/main/examples\offline_inference\qwen2_5_omni>.
+
+
+## 🛠️ Installation
+
+Please refer to [README.md](https://github.com/vllm-project/vllm-omni/tree/main/README.md)
+
+## Run examples (Qwen2.5-omni)
+### Multiple Prompts
+Download dataset from [seed_tts](https://drive.google.com/file/d/1GlSjVfSHkW3-leKKBlfrjuuTGqQ_xaLP/edit). To get the prompt, you can:
+```bash
+tar -xf <Your Download Path>/seedtts_testset.tar
+cp seedtts_testset/en/meta.lst examples/offline_inference/qwen2_5_omni/meta.lst
+python3 examples/offline_inference/qwen2_5_omni/extract_prompts.py \
+  --input examples/offline_inference/qwen2_5_omni/meta.lst \
+  --output examples/offline_inference/qwen2_5_omni/top100.txt \
+  --topk 100
+```
+Get into the example folder
+```bash
+cd examples/offline_inference/qwen2_5_omni
+```
+Then run the command below.
+```bash
+bash run_multiple_prompts.sh
+```
+### Single Prompts
+Get into the example folder
+```bash
+cd examples/offline_inference/qwen2_5_omni
+```
+Then run the command below.
+```bash
+bash run_single_prompt.sh
+```
+
+## Example materials
+
+??? abstract "end2end.py"
+    ``````py
+    --8<-- "examples\offline_inference\qwen2_5_omni\end2end.py"
+    ``````
+??? abstract "extract_prompts.py"
+    ``````py
+    --8<-- "examples\offline_inference\qwen2_5_omni\extract_prompts.py"
+    ``````
+??? abstract "processing_omni.py"
+    ``````py
+    --8<-- "examples\offline_inference\qwen2_5_omni\processing_omni.py"
+    ``````
+??? abstract "run_multiple_prompts.sh"
+    ``````sh
+    --8<-- "examples\offline_inference\qwen2_5_omni\run_multiple_prompts.sh"
+    ``````
+??? abstract "run_single_prompt.sh"
+    ``````sh
+    --8<-- "examples\offline_inference\qwen2_5_omni\run_single_prompt.sh"
+    ``````
+??? abstract "utils.py"
+    ``````py
+    --8<-- "examples\offline_inference\qwen2_5_omni\utils.py"
+    ``````