Publish an interactive leaderboard table on HF.

Ideally this should be done via a GitHub action, which will also update the markdown table on README

Attached you will find an example code of the open_llm_leaderboard

https://huggingface.co/docs/leaderboards/leaderboards/building_page
https://huggingface.co/demo-leaderboard-backend

open_llm_leaderboard.zip