* refactor(Theme): migrate accentColor
- based on the specs at https://docs.flutter.dev/release/breaking-changes/theme-data-accent-properties#migration-guide.
* refactor(Theme): all deprecated TextTheme styles
* refactor(Theme): deprecated backgroundColor for colorScheme.background
* refactor(Theme): deprecated buttonColor to use TextTheme backgroundColor instead
* refactor(Theme): deprecated isAlwaysShown to use thumbVisibility instead
* - push change pin page as a replacement for auth page to avoid closing it once its opened
- Add cool-down duration after popping flushbars and pushing new routes
* Replace old flushbar package with its updated version
Fix flushbars throughtout the app
* Fix Navigation happening all at once causing debugLocked error
* Remove un-necessary async/await
* Remove un-necessary future delayed
* Make process text flushbar indefinite
* Fix show seeds/keys popping page after being pushed instead of popping the auth route
