feat(App): update Finlytic Flutter app UI and blocs

FinlyticApp/lib/features/auth/bloc/auth_state.dart

@@ -0,0 +1,41 @@
+import 'package:equatable/equatable.dart';
+import 'package:finlytic_app/features/auth/models/user_model.dart';
+
+abstract class AuthState extends Equatable {
+  const AuthState();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class AuthInitial extends AuthState {}
+
+class AuthLoading extends AuthState {}
+
+class Authenticated extends AuthState {
+  final UserModel user;
+
+  const Authenticated(this.user);
+
+  @override
+  List<Object?> get props => [user];
+}
+
+class Unauthenticated extends AuthState {}
+
+class AuthRequiresPasswordChange extends AuthState {
+  final String userId;
+
+  const AuthRequiresPasswordChange(this.userId);
+
+  @override
+  List<Object?> get props => [userId];
+}
+class AuthFailure extends AuthState {
+  final String error;
+
+  const AuthFailure(this.error);
+
+  @override
+  List<Object?> get props => [error];
+}