Add LaTex and mathpix-markdown-it as outputs

[sirus20x6]

Requested feature

Add Latex and mathpix-markdown-it formats as available outputs

nougat uses Mathpix Markdown and it creates beautiful formulas because it's powered by LaTex

example paper I had on hand The Impact of Initialization on LoRA Finetuning Dynamics

Formula from the paper:

docling version in markdown

and this is from nougat

[znsoftm]

Good idea. It is neccesary for researchers.

[PeterStaar-IBM]

@sirus20x6 If you want this functionality, please make a PR in https://github.com/DS4SD/docling-core complementing the export_to_markdown (see here)