TF-80 Move email to Mailbox in Email Detailed view

model/lib/extensions/mailbox_id_extension.dart

@@ -0,0 +1,15 @@
+import 'package:jmap_dart_client/jmap/core/patch_object.dart';
+import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
+
+extension MailboxIdExtension on MailboxId {
+  String generatePath() {
+    return '${PatchObject.mailboxIdsProperty}/${id.value}';
+  }
+
+  PatchObject generateMoveToMailboxActionPath(MailboxId destinationMailboxId) {
+    return PatchObject({
+      generatePath():  null,
+      destinationMailboxId.generatePath(): true
+    });
+  }
+}