Initializing app states,
- https://github.com/bizz84/flutter-tips-and-tricks/blob/main/tips/0056-async-init-provider-overrides/index.md
- rrousselGit/riverpod#295
- https://codewithandrea.com/articles/riverpod-initialize-listener-app-startup/
- rrousselGit/riverpod#329
- https://github.com/bizz84/flutter-tips-and-tricks/blob/main/tips/0131-future-provider-require-value/index.md
- rrousselGit/riverpod#1387 (explained why apparently eager initialization is the best way)