[Test]Add accuracy test for multiple models (#3823)

### What this PR does / why we need it?
Add accuracy test for multiple models：
- Meta_Llama_3.1_8B_Instruct
- Qwen2.5-Omni-7B
- Qwen3-VL-8B-Instruct

- vLLM version: v0.11.0
- vLLM main:
83f478bb19

---------

Signed-off-by: MrZ20 <2609716663@qq.com>

tests/e2e/models/configs/Meta-Llama-3.1-8B-Instruct.yaml

@@ -0,0 +1,11 @@
+model_name: "LLM-Research/Meta-Llama-3.1-8B-Instruct"
+hardware: "Atlas A2 Series"
+tasks:
+- name: "gsm8k"
+  metrics:
+  - name: "exact_match,strict-match"
+    value: 0.82
+  - name: "exact_match,flexible-extract"
+    value: 0.84
+
+num_fewshot: 5