[DOCS] Write a yaml processor which adds the actions to the root README

[damienwebdev]

📄 Documentation Request

What were you doing?

I was trying to get an overview of every action.

Expected behavior

I would like to be able to see the list of actions in the README. However, humans are terrible at remembering things, so we often forget to add them to the root. We should automate this.

Existing Documentation

https://github.com/mage-os/github-actions/blob/main/README.md