* refactor(mobile): add Isar DB & Store class
new Store: globally accessible key-value store like Hive (but based on Isar)
replace first few places of Hive usage with the new Store
* reduce max. DB size to prevent errors on older iOS devices
---------
Co-authored-by: Alex <alex.tran1502@gmail.com>
* Add integration tests for the login process
* Reorganize tests
* Test wrong instance URL
* Run mobile unit tests in CI
* Fix CI
* Pin Flutter Version to 3.3.10
* Push something stupid to re-trigger CI
