Improved json auto save & budget mobile UI

lib/domains/account/account_event.dart

@@ -7,6 +7,10 @@ sealed class AccountEvent extends Equatable {
   List<Object> get props => [];
 }
 
+final class ClearData extends AccountEvent {
+  const ClearData();
+}
+
 final class AccountImportCSV extends AccountEvent {
   const AccountImportCSV();
 }