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/kreparentingproxymodel.h

@@ -0,0 +1,143 @@
+/*
+    SPDX-FileCopyrightText: 2009 Stephen Kelly <steveire@gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#ifndef KREPARENTINGPROXYMODEL_H
+#define KREPARENTINGPROXYMODEL_H
+
+#include <QAbstractProxyModel>
+
+class KReparentingProxyModelPrivate;
+
+/**
+  @brief Restructures a source model, changing the parents of items.
+
+  Subclasses can change the structure of a source model by reimplementing
+  the isDescendantOf method.
+
+  For example, if the source model is a list,
+
+  @verbatim
+  0
+  - A
+  - B
+  - C
+  - D
+  - E
+  @endverbatim
+
+  It could be converted to a tree by an implementation something like:
+
+  @code
+  bool MyReparentingModel::isDescedantOf(const QModelIndex& ancestor, const QModelIndex& descendant ) const
+  {
+     return (
+             (ancestor.data().toString() == "A" && descendant.data().toString() == "B")
+          || (ancestor.data().toString() == "A" && descendant.data().toString() == "C")
+          || (ancestor.data().toString() == "B" && descendant.data().toString() == "C")
+          || (ancestor.data().toString() == "A" && descendant.data().toString() == "D")
+          )
+    ? true : KReparentingProxyModel::isDescendantOf(ancestor, descendant);
+  }
+  @endcode
+
+  to get this result:
+
+  @verbatim
+  0
+  - A
+  - - B
+  - - - C
+  - - D
+  - E
+  @endverbatim
+
+  Note that the implementation returns true for a query if "C" is a descendant of "A".
+  The implementation must return the correct value for all of its descendants, not only its direct parent.
+  The actual location to insert the descendant in the tree is determined internally by a binary find algorithm.
+
+  The KReparentingProxyModel performs movement of items in the left-right directions, but not the up-down directions.
+
+  \image html reparenting1.png "KReparentingProxyModel moving rows left to right"
+
+  \image html reparenting2.png "KReparentingProxyModel can not move items both left-right and up-down"
+
+  Reordering the rows in a model is the domain of QSortFilterProxyModel. An intermediate QSortFilterProxyModel
+  can be used to achieve the desired result.
+
+  \image html reparenting3.png "KReparentingProxyModel and QSortFilterProxyModel working in concert to move items both left-right and up-down"
+
+  @code
+    QAbstractItemModel *model = getModel();
+
+    QSortFilterProxyModel *sorter = getSorter();
+    sorter->setSourceModel(model);
+
+    KReparentingProxyModel *reparenter = getReparenter();
+    reparenter->setSourceModel(sorter);
+
+    QTreeView *view = getView();
+    view->setModel(reparenter);
+  @endcode
+
+*/
+class KReparentingProxyModel : public QAbstractProxyModel
+{
+    Q_OBJECT
+public:
+    KReparentingProxyModel(QObject *parent = nullptr);
+
+    ~KReparentingProxyModel() override;
+
+    QModelIndex mapFromSource(const QModelIndex &sourceIndex) const override;
+
+    QModelIndex mapToSource(const QModelIndex &proxyIndex) const override;
+
+    void setSourceModel(QAbstractItemModel *sourceModel) override;
+
+    /**
+      Reimplement this to return whether @p descendant is a descendant of @p ancestor.
+    */
+    virtual bool isDescendantOf(const QModelIndex &ancestor, const QModelIndex &descendant) const;
+
+    int columnCount(const QModelIndex &parent = QModelIndex()) const override;
+
+    QVariant data(const QModelIndex &proxyIndex, int role = Qt::DisplayRole) const override;
+
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
+
+    QModelIndex parent(const QModelIndex &child) const override;
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+
+    bool hasChildren(const QModelIndex &parent = QModelIndex()) const override;
+
+    Qt::DropActions supportedDropActions() const override;
+
+protected:
+    void beginChangeRule();
+    void endChangeRule();
+
+private:
+    Q_DECLARE_PRIVATE(KReparentingProxyModel)
+    //@cond PRIVATE
+    KReparentingProxyModelPrivate *d_ptr;
+
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsAboutToBeInserted(const QModelIndex &, int, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsInserted(const QModelIndex &, int, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsAboutToBeRemoved(const QModelIndex &, int, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsRemoved(const QModelIndex &, int, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsAboutToBeMoved(const QModelIndex &, int, int, const QModelIndex &, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceRowsMoved(const QModelIndex &, int, int, const QModelIndex &, int))
+    Q_PRIVATE_SLOT(d_func(), void sourceModelAboutToBeReset())
+    Q_PRIVATE_SLOT(d_func(), void sourceModelReset())
+    Q_PRIVATE_SLOT(d_func(), void sourceLayoutAboutToBeChanged())
+    Q_PRIVATE_SLOT(d_func(), void sourceLayoutChanged())
+    Q_PRIVATE_SLOT(d_func(), void sourceDataChanged(const QModelIndex &, const QModelIndex &))
+
+    //@endcond
+};
+
+#endif