TW-4308 Add labels for several messages part 2 (#4431)

Add ChooseLabelModal, delegate, and update label UI components

Wire add-labels action across Thread, Search, and Dashboard

lib/features/labels/domain/model/add_list_labels_to_list_emails_params.dart

@@ -0,0 +1,25 @@
+import 'package:equatable/equatable.dart';
+import 'package:jmap_dart_client/jmap/mail/email/email.dart';
+import 'package:jmap_dart_client/jmap/mail/email/keyword_identifier.dart';
+import 'package:labels/extensions/list_label_extension.dart';
+import 'package:labels/model/label.dart';
+import 'package:tmail_ui_user/features/email/domain/state/labels/add_list_label_to_list_email_state.dart';
+
+class AddListLabelsToListEmailsParams extends Equatable {
+  final List<Label> labels;
+  final List<EmailId> emailIds;
+  final OnSyncListLabelForListEmail onSync;
+
+  const AddListLabelsToListEmailsParams({
+    required this.labels,
+    required this.emailIds,
+    required this.onSync,
+  });
+
+  List<KeyWordIdentifier> get labelKeywords => labels.keywords;
+
+  List<String> get labelDisplays => labels.displayNameNotNullList;
+
+  @override
+  List<Object?> get props => [labels, emailIds, onSync];
+}