TF-4171 Add datasource/repository/interactor for get all labels

lib/features/labels/domain/repository/label_repository.dart

@@ -0,0 +1,6 @@
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:labels/model/label.dart';
+
+abstract class LabelRepository {
+  Future<List<Label>> getAllLabels(AccountId accountId);
+}

lib/features/labels/domain/state/get_all_label_state.dart

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+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:labels/model/label.dart';
+
+class GettingAllLabel extends LoadingState {}
+
+class GetAllLabelSuccess extends UIState {
+  final List<Label> labels;
+
+  GetAllLabelSuccess(this.labels);
+
+  @override
+  List<Object> get props => [labels];
+}
+
+class GetAllLabelFailure extends FeatureFailure {
+  GetAllLabelFailure(dynamic exception) : super(exception: exception);
+}

lib/features/labels/domain/usecases/get_all_label_interactor.dart

@@ -0,0 +1,22 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:dartz/dartz.dart';
+import 'package:jmap_dart_client/jmap/account_id.dart';
+import 'package:tmail_ui_user/features/labels/domain/repository/label_repository.dart';
+import 'package:tmail_ui_user/features/labels/domain/state/get_all_label_state.dart';
+
+class GetAllLabelInteractor {
+  final LabelRepository _labelRepository;
+
+  GetAllLabelInteractor(this._labelRepository);
+
+  Stream<Either<Failure, Success>> execute(AccountId accountId) async* {
+    try {
+      yield Right(GettingAllLabel());
+      final labels = await _labelRepository.getAllLabels(accountId);
+      yield Right(GetAllLabelSuccess(labels));
+    } catch (e) {
+      yield Left(GetAllLabelFailure(e));
+    }
+  }
+}