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/autotests/proxymodeltestsuite/modeldumper.cpp

@@ -0,0 +1,81 @@
+/*
+    SPDX-FileCopyrightText: 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.net>
+    SPDX-FileContributor: Stephen Kelly <stephen@kdab.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "modeldumper.h"
+
+#include <QAbstractItemModel>
+
+ModelDumper::ModelDumper()
+{
+}
+
+static int num;
+
+void ModelDumper::dumpModel(const QAbstractItemModel *const model, QIODevice *device) const
+{
+    num = 1;
+
+    device->write(dumpLevel(model, QModelIndex(), 1).toLatin1());
+}
+
+QString ModelDumper::dumpModel(const QAbstractItemModel *const model) const
+{
+    num = 1;
+    return dumpLevel(model, QModelIndex(), 1);
+}
+
+QString ModelDumper::dumpTree(const QAbstractItemModel *const model, const QModelIndex &index) const
+{
+    num = 1;
+    return dumpLevel(model, index, 1);
+}
+
+QString ModelDumper::dumpTree(const QAbstractItemModel *const model, const QModelIndex &index, int start, int end) const
+{
+    num = 1;
+    return dumpLevel(model, index, 1, start, end);
+}
+
+void ModelDumper::dumpTree(const QAbstractItemModel *const model, QIODevice *device, const QModelIndex &index) const
+{
+    num = 1;
+    device->write(dumpLevel(model, index, 1).toLatin1());
+}
+
+void ModelDumper::dumpTree(const QAbstractItemModel *const model, QIODevice *device, const QModelIndex &index, int start, int end) const
+{
+    num = 1;
+    device->write(dumpLevel(model, index, 1, start, end).toLatin1());
+}
+
+QString ModelDumper::dumpLevel(const QAbstractItemModel *const model, const QModelIndex &parent, int level) const
+{
+    const int rowCount = model->rowCount(parent);
+    return dumpLevel(model, parent, level, 0, rowCount - 1);
+}
+
+QString ModelDumper::dumpLevel(const QAbstractItemModel *const model, const QModelIndex &parent, int level, int start, int end) const
+{
+    QString lines;
+    for (int row = start; row <= end; ++row) {
+        QString line;
+        line.append("\"");
+        for (int l = 0; l < level; ++l) {
+            line.append("- ");
+        }
+        line.append(QString::number(num++));
+        line.append("\"");
+        line.append("\n");
+        lines.append(line);
+        static const int column = 0;
+        const QModelIndex idx = model->index(row, column, parent);
+        if (model->hasChildren(idx)) {
+            lines.append(dumpLevel(model, idx, level + 1));
+        }
+    }
+    return lines;
+}