Finish refactoring of GGI infra and repositories
We had an organic development and some of our collaborative channels/tools are not optimal anymore. We need to:
- Move the Git repo from ggi-castalia to ggi so all development happens there.
- Set the ggi-castalia project read-only.
- Use ggi issues tracking to track our tasks and progress.
We might need also a very simple presentation of our organisation (GitLab pages?) with:
- Quick intro of our topics.
- How to contribute, governance.
- Links to resources center & ospo zone.