Init login feature add domain layer

lib/features/login/domain/state/authentication_user_state.dart

@@ -0,0 +1,20 @@
+import 'package:core/core.dart';
+import 'package:model/model.dart';
+
+class AuthenticationUserViewState extends ViewState {
+  final User user;
+
+  AuthenticationUserViewState(this.user);
+
+  @override
+  List<Object> get props => [user];
+}
+
+class AuthenticationUserFailure extends FeatureFailure {
+  final exception;
+
+  AuthenticationUserFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

lib/features/login/domain/state/get_credential_state.dart

@@ -0,0 +1,24 @@
+import 'package:core/core.dart';
+import 'package:core/presentation/state/failure.dart';
+import 'package:model/account/password.dart';
+import 'package:model/account/user_name.dart';
+
+class GetCredentialViewState extends ViewState {
+  final Uri baseUrl;
+  final UserName userName;
+  final Password password;
+
+  GetCredentialViewState(this.baseUrl, this.userName, this.password);
+
+  @override
+  List<Object> get props => [baseUrl, this.userName, this.password];
+}
+
+class GetCredentialFailure extends FeatureFailure {
+  final exception;
+
+  GetCredentialFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}