restructured the application

added .end files
switched to BLoC state-management
removed unnecessary helpers
initialized Scenes Page

lib/features/auth/bloc/auth_cubit.dart

@@ -0,0 +1,8 @@
+import 'package:bloc/bloc.dart';
+import 'package:meta/meta.dart';
+
+part 'auth_state.dart';
+
+class AuthCubit extends Cubit<AuthState> {
+  AuthCubit() : super(AuthInitial());
+}

lib/features/auth/bloc/auth_state.dart

@@ -0,0 +1,6 @@
+part of 'auth_cubit.dart';
+
+@immutable
+abstract class AuthState {}
+
+class AuthInitial extends AuthState {}