fix(credits): add VaiTon to contributors

fix: update platforms

update

pubspec.yaml:
+ upgraded all packages

Android:
+ upgraded Kotlin Gradle plugin version to latest (1.9.22)

Update README.md

Update README.md

update ViewSettings

TO-DO:
+ rimuovere il go back quando l'utente salva/cancella le impostazioni.

sostituiti widget deprecati

Rimpiazzati i WillPopScope con PopScope.
Riferimento: [Android Predictive Back](https://docs.flutter.dev/release/breaking-changes/android-predictive-back)

Update README.md

update

+ download nuova versione in base alla piattaforma;

Update ViewSettings.dart