Intro to Git lesson

How to move content of the workshop:
- Clone the esciencecenter-digital-skills [repository](https://github.com/esciencecenter-digital-skills/git-lesson) you want to move the content to
- [Try to build a website locally](https://carpentries.github.io/sandpaper-docs/introduction.html#preview)
- Add a new episode.
- If the episode comes from the Carpentry, copy it from the GitHub repository. Example for git lesson: https://github.com/swcarpentry/git-novice/tree/main/episodes
- Add the markdown file in the folder `episodes` and list it in the `config.yaml`
- Adjust it if needed. Example for git lesson: see [here](https://github.com/esciencecenter-digital-skills/good-practices-in-research-software-development/blob/main/episodes/02-introduction-to-git.md).