Change Details

We need to create `user federation` provider that will connect MediaWiki instance(s) to Keycloak and allow users who created accounts on MediaWiki(s) to log in using Keycloak. **Acceptance criteria** I can log into MediaWiki using Keycloak with account that was created using CentralAuth. **To-Do** [ ] create initial setup for the `user federation` provider [ ] add search users functionality [ ] add show all users functionality [ ] add view single user functionality **Notes** Here's an [example](https://www.n-k.de/2022/02/keycloak-custom-user-storage-provider.html) tutorial on how to create a custom provieder.