add ocr vqa images

[Victorwz]

Most of downloading urls of images in ocr_vqa dataset are no longer available. Everyone has to rerun the downloading script to get a small portion of ocr_vqa images in the LLaVA-v1.5-665k instruction dataset. I zip all images from original release into a zip file. Everyone can easily download it and unzip to their path of ./ocr_vqa/images