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-kwidgetsaddons/source/examples/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(kmessagebox)

local/recipes/kde/kf6-kwidgetsaddons/source/examples/kmessagebox/CMakeLists.txt

@@ -0,0 +1,10 @@
+
+add_executable(kwidgetaddons-example-kmessagebox main.cpp)
+
+target_link_libraries(kwidgetaddons-example-kmessagebox
+    Qt6::Widgets
+    KF6::WidgetsAddons
+)
+
+# We don't want to install the tutorial
+#install(TARGETS kwidgetaddons-example-kmessagebox  ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})

local/recipes/kde/kf6-kwidgetsaddons/source/examples/kmessagebox/main.cpp

@@ -0,0 +1,41 @@
+/*
+    This file is part of the KDE project
+    SPDX-FileCopyrightText: 2018 Friedrich W. H. Kossebau <kossebau@kde.org>
+    SPDX-FileCopyrightText: 2018 Olivier Churlaud <olivier@churlaud.com>
+    SPDX-FileCopyrightText: 2016 Juan Carlos Torres <carlosdgtorres@gmail.com>
+
+    SPDX-License-Identifier: LGPL-3.0-or-later
+*/
+
+#include <KMessageBox>
+#include <QApplication>
+
+#include <iostream>
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    // Define the question answer buttons
+    KGuiItem primaryAction(QStringLiteral("Hello"), // the button label
+                           QStringLiteral("view-filter"), // iconName, can be empty to fallback to default
+                           QStringLiteral("This is a tooltip"),
+                           QStringLiteral("This is a WhatsThis help text."));
+
+    KGuiItem secondaryAction(QStringLiteral("Bye")); // the button label
+
+    KMessageBox::ButtonCode res = KMessageBox::questionTwoActions(nullptr, // Parent, here none
+                                                                           // The description can contain HTML
+                                                                  QStringLiteral("Description to tell you to click<br />on <b>either</b> button"),
+                                                                  QStringLiteral("My Title"),
+                                                                  primaryAction,
+                                                                  secondaryAction);
+
+    if (res == KMessageBox::PrimaryAction) {
+        std::cout << "You clicked Hello\n";
+        return EXIT_SUCCESS;
+    } else {
+        std::cout << "You clicked Bye\n";
+        return EXIT_FAILURE;
+    }
+}