TF-4148 Add link to common settings in mobile application (#4149)

model/lib/extensions/oidc_user_info_extension.dart

@@ -0,0 +1,5 @@
+import 'package:model/oidc/response/oidc_user_info.dart';
+
+extension OidcUserInfoExtension on OidcUserInfo {
+  bool get isWorkplaceFqdnValid => workplaceFqdn?.trim().isNotEmpty == true;
+}

model/lib/model.dart

@@ -62,6 +62,7 @@ export 'extensions/utc_date_extension.dart';
 export 'extensions/contact_support_capability_extension.dart';
 export 'extensions/list_id_extension.dart';
 export 'extensions/set_email_body_part_extension.dart';
+export 'extensions/oidc_user_info_extension.dart';
 // Identity
 export 'identity/identity_request_dto.dart';
 export 'mailbox/expand_mode.dart';