VLLM支持多模态弱

[wurevvc]

再跑OCRbenchmark时候，出现了很多bug.：
1.llava-1.5-7b-hf :RuntimeError: The size of tensor a (577) must match the size of tensor b (576) at non-singleton dimension 1.
2.MiniCPM-Llama3-V-2_5:RuntimeError: Sizes of tensors must match except in dimension 1. Expected size 8 but got size 9 for tensor number 1 in the list.
3.minicpmv：单张卡跑不起来。