Add presentation layer for get Session

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

@@ -1,7 +1,7 @@
 import 'package:core/core.dart';
 import 'package:model/model.dart';
 
-class AuthenticationUserViewState extends ViewState {
+class AuthenticationUserViewState extends UIState {
   final User user;
 
   AuthenticationUserViewState(this.user);

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

@@ -0,0 +1,18 @@
+import 'package:core/core.dart';
+import 'package:core/presentation/state/failure.dart';
+
+class DeleteCredentialSuccess extends UIState {
+  DeleteCredentialSuccess();
+
+  @override
+  List<Object> get props => [];
+}
+
+class DeleteCredentialFailure extends FeatureFailure {
+  final exception;
+
+  DeleteCredentialFailure(this.exception);
+
+  @override
+  List<Object> get props => [exception];
+}

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

@@ -3,7 +3,7 @@ import 'package:core/presentation/state/failure.dart';
 import 'package:model/account/password.dart';
 import 'package:model/account/user_name.dart';
 
-class GetCredentialViewState extends ViewState {
+class GetCredentialViewState extends UIState {
   final Uri baseUrl;
   final UserName userName;
   final Password password;