This PR adds a comprehensive model card for OCRVerse. It includes:
- Metadata tags for `pipeline_tag`, `library_name`, and `license`.
- Links to the [OCRVerse paper](https://huggingface.co/papers/2601.21639) and [GitHub repository](https://github.com/DocTron-hub/OCRVerse).
- A sample usage code snippet for document parsing using the `transformers` library, as provided in the official repository.
