transformers pytorch internvl_chat feature-extraction internvl vision ocr multi-image video custom_code image-text-to-text multilingual arxiv:2312.14238 arxiv:2404.16821 base_model:OpenGVLab/InternViT-6B-448px-V1-0 base_model:merge:OpenGVLab/InternViT-6B-448px-V1-0 base_model:meta-llama/Llama-2-13b-hf base_model:merge:meta-llama/Llama-2-13b-hf license:mit region:us