Advance Wayland and KDE package bring-up

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/recipes/kde/kf6-kitemmodels/source/tests/proxymodeltestapp/descendantqmltree.h

@@ -0,0 +1,27 @@
+/*
+    This file is part of the proxy model test suite.
+
+    SPDX-FileCopyrightText: 2020 Marco Martin <mart@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-or-later
+*/
+
+#ifndef DESCENDANTQMLTREE_H
+#define DESCENDANTQMLTREE_H
+
+#include <QWidget>
+
+class QTreeView;
+
+class DynamicTreeModel;
+
+class DescendantQmlTreeWidget : public QWidget
+{
+public:
+    DescendantQmlTreeWidget(QWidget *parent = nullptr);
+
+private:
+    DynamicTreeModel *m_rootModel;
+};
+
+#endif