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-kconfigwidgets/source/src/kviewstatemaintainer.h

@@ -0,0 +1,65 @@
+/*
+    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
+*/
+
+#ifndef KVIEWSTATEMAINTAINER_H
+#define KVIEWSTATEMAINTAINER_H
+
+#include <KViewStateMaintainerBase>
+
+#include <QAbstractItemView>
+
+#include <KConfigGroup>
+
+/**
+ * @class KViewStateMaintainer kviewstatemaintainer.h KViewStateMaintainer
+ *
+ * @brief Encapsulates the maintenance of state between resets of QAbstractItemModel
+ *
+ * @code
+ *   m_collectionViewStateMaintainer = new KViewStateMaintainer<Akonadi::ETMViewStateSaver>(KSharedConfig::openConfig()->group("collectionView"));
+ *   m_collectionViewStateMaintainer->setView(m_collectionView);
+ *
+ *   m_collectionCheckStateMaintainer = new KViewStateMaintainer<Akonadi::ETMViewStateSaver>(KSharedConfig::openConfig()->group("collectionCheckState"));
+ *   m_collectionCheckStateMaintainer->setSelectionModel(m_checkableProxy->selectionModel());
+ * @endcode
+ *
+ * @see KConfigViewStateSaver
+ */
+template<typename StateSaver>
+class KViewStateMaintainer : public KViewStateMaintainerBase
+{
+    typedef StateSaver StateRestorer;
+
+public:
+    KViewStateMaintainer(const KConfigGroup &configGroup, QObject *parent = nullptr)
+        : KViewStateMaintainerBase(parent)
+        , m_configGroup(configGroup)
+    {
+    }
+
+    /* reimp */ void saveState()
+    {
+        StateSaver saver;
+        saver.setView(view());
+        saver.setSelectionModel(selectionModel());
+        saver.saveState(m_configGroup);
+        m_configGroup.sync();
+    }
+
+    /* reimp */ void restoreState()
+    {
+        StateRestorer *restorer = new StateRestorer;
+        restorer->setView(view());
+        restorer->setSelectionModel(selectionModel());
+        restorer->restoreState(m_configGroup);
+    }
+
+private:
+    KConfigGroup m_configGroup;
+};
+
+#endif