mm: add qwen vl2.5 model support.

[kzjeef]

• add qwen vl 2.5 model support.
• Qwen VL2.5 only support 'transformers' as vit engine, (trt not support yet.)
• upgrade package version to make sure VL2.5 code is added.

Resolves #79

test command:

server:
dashinfer_vlm_serve --model qwen/Qwen2.5-VL-3B-Instruct --vision_engine transformers --port 8000 --host=127.0.0.1

client:

curl http://localhost:8000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d \ '{"model": "qwen/Qwen2.5-VL-3B-Instruct", "messages": [{"role": "user", "content": [{ "type": "text", "text": "Describe the image." }, {"type": "image_url", "image_url": {"url": "https://farm4.staticflickr.com/3075/3168662394_7d7103de7d_z_d.jpg"}}]}], "max_completion_tokens": 1024, "top_p": 0.5, "temperature": 0.1, "frequency_penalty": 1.05 }'

result:

{"id":"chatcmpl-rxqDiCQEJweEeeB7FADiER","object":"chat.completion",
"created":1747992522,"model":"model","choices":[{"index":0,"message":{"role":"assistant","content":"The
image features a small hummingbird perched on a branch. The bird is positioned in the center of the scene,
with its vibrant colors and delicate features clearly visible. The hummingbird appears to be enjoying its
time in nature, possibly searching for food or simply resting on the branch. \n\nThere are no other birds
or animals present in the image, making it a solitary moment captured in this natural
setting."},"finish_reason":"stop"}],"usage":{"prompt_tokens":382,"total_tokens":95,"completion_tokens":81}}