Support for HunyuanOCR

### Requested feature

I've tested this model with [llama.cpp](https://github.com/ggml-org/llama.cpp), it's fast & accurate.

GGUF: https://huggingface.co/ggml-org/HunyuanOCR-GGUF

My tests did include (in Spanish):

- Text and tables: "convert to markdown with tables"
- Diagram with text: "convert to mermaid diagram" or "convert to graphviz's dot"

### Alternatives

- [GLM-OCR](https://huggingface.co/ggml-org/GLM-OCR-GGUF)

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PD: Docling's default OCR model doesn't support Spanish language text.