TF-123 Implement refresh all mailbox

model/lib/extensions/list_mailbox_extension.dart

@@ -0,0 +1,13 @@
+
+import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
+
+extension ListMailboxExtension on List<Mailbox> {
+
+  Mailbox? findMailbox(MailboxId mailboxId) {
+    try {
+      return firstWhere((element) => element.id == mailboxId);
+    } catch (e) {
+      return null;
+    }
+  }
+}