TF-4308 Add E2E tests for ChooseLabelModal and NoLabelYetWidget

Signed-off-by: dab246 <tdvu@linagora.com>

integration_test/tests/labels/create_label_from_choose_label_modal_with_existing_labels_test.dart

@@ -0,0 +1,11 @@
+import '../../base/test_base.dart';
+import '../../scenarios/labels/create_label_from_choose_label_modal_with_existing_labels_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description:
+        'Should show "Create a label" button in Choose Label modal when labels exist, and create a new label successfully',
+    scenarioBuilder: ($) =>
+        CreateLabelFromChooseLabelModalWithExistingLabelsScenario($),
+  );
+}

integration_test/tests/labels/create_label_from_no_label_yet_widget_test.dart

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+import '../../base/test_base.dart';
+import '../../scenarios/labels/create_label_from_no_label_yet_widget_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description:
+        'Should create a label from NoLabelYetWidget and show it in the Choose Label modal list',
+    scenarioBuilder: ($) => CreateLabelFromNoLabelYetWidgetScenario($),
+  );
+}

integration_test/tests/labels/display_no_label_yet_widget_when_open_choose_label_modal_test.dart

@@ -0,0 +1,11 @@
+import '../../base/test_base.dart';
+import '../../scenarios/labels/display_no_label_yet_widget_when_open_choose_label_modal_scenario.dart';
+
+void main() {
+  TestBase().runPatrolTest(
+    description:
+        'Should display NoLabelYetWidget when opening Choose Label modal with no labels',
+    scenarioBuilder: ($) =>
+        DisplayNoLabelYetWidgetWhenOpenChooseLabelModalScenario($),
+  );
+}