TF-4178 Add datasource/repository/interactor for create new label

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

@@ -0,0 +1,18 @@
+import 'package:core/presentation/state/failure.dart';
+import 'package:core/presentation/state/success.dart';
+import 'package:labels/model/label.dart';
+
+class CreatingNewLabel extends LoadingState {}
+
+class CreateNewLabelSuccess extends UIState {
+  final Label newLabel;
+
+  CreateNewLabelSuccess(this.newLabel);
+
+  @override
+  List<Object> get props => [newLabel];
+}
+
+class CreateNewLabelFailure extends FeatureFailure {
+  CreateNewLabelFailure(dynamic exception) : super(exception: exception);
+}