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-kwindowsystem/source/src/kwindowsystemplugininterface.cpp

@@ -0,0 +1,38 @@
+/*
+    SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
+*/
+
+#include "kwindowsystemplugininterface_p.h"
+
+KWindowSystemPluginInterface::KWindowSystemPluginInterface(QObject *parent)
+    : QObject(parent)
+{
+}
+
+KWindowSystemPluginInterface::~KWindowSystemPluginInterface()
+{
+}
+
+KWindowEffectsPrivate *KWindowSystemPluginInterface::createEffects()
+{
+    return nullptr;
+}
+
+KWindowSystemPrivate *KWindowSystemPluginInterface::createWindowSystem()
+{
+    return nullptr;
+}
+
+KWindowShadowPrivate *KWindowSystemPluginInterface::createWindowShadow()
+{
+    return nullptr;
+}
+
+KWindowShadowTilePrivate *KWindowSystemPluginInterface::createWindowShadowTile()
+{
+    return nullptr;
+}
+
+#include "moc_kwindowsystemplugininterface_p.cpp"