Add ds model card

[bursteratom]

Continuation of PR#1015 with rebasing

Description

Add dataset tagging to model card for both local and push to huggingface hub.

https://github.com/huggingface/hub-docs/blob/main/modelcard.md

Motivation and Context

How has this been tested?

Screenshots (if appropriate)

Types of changes

Social Handles (Optional)

[bursteratom]

@winglian this is a temporary WIP patch, the proper way will probably be actually parsing dataset_tags into the trainer for proper kwarg sanitising, I think. Do you think it's necessary?

[winglian]

Why skip for dpo? Let's make sure to properly handle that case too.

[bursteratom]

@winglian trl trainer's def create_model_card() has different arguments that don't seem to directly support dataset tags (it only allows you to parse the name of a single dataset),
https://github.com/huggingface/trl/blob/main/trl/trainer/dpo_trainer.py
so thinking of how to get around that properly

[winglian]

there are too many unrelated changes in this PR from doing a merge commit. Please resolve and re-request a review.

[winglian]

This file should have no edits, you have some errors in your merge commit. I personally prefer to rebase branches rather than merge commits to avoid issues like this.

[winglian]

saem as above.

[winglian]

saem as above.

[winglian]

saem as above.

[winglian]

saem as above.

[winglian]

saem as above.

[bursteratom]

to be continued with rebasing here: #2101