Add option to download image/video from remote storage for image/video to text

### 🚀 Feature Description and Motivation

for multi-modality usecase, add option to download image or video from remote storage such as S3.

We can leverage storage API: https://github.com/vllm-project/aibrix/tree/main/python/aibrix/aibrix/storage to download the files.

### Use Case

For vllm, image/video to text.

### Proposed Solution

_No response_