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/tests/kdatecomboboxtestapp.cpp

@@ -0,0 +1,46 @@
+/*
+    SPDX-FileCopyrightText: 2022 g10 Code GmbH
+    SPDX-FileContributor: Ingo Klöcker <dev@ingo-kloecker.de>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#include "kdatecombobox.h"
+#include <QApplication>
+#include <QCommandLineParser>
+#include <QDate>
+#include <QDebug>
+
+int main(int argc, char **argv)
+{
+    QApplication::setApplicationName(QStringLiteral("test"));
+    QApplication app{argc, argv};
+
+    QCommandLineParser parser;
+    parser.addHelpOption();
+    parser.addOption({QStringLiteral("min-date"), QStringLiteral("Minimum date in ISO 8601 format, e.g. 2020-02-02"), QStringLiteral("min-date")});
+    parser.addOption({QStringLiteral("max-date"), QStringLiteral("Maximum date in ISO 8601 format, e.g. 2121-12-12"), QStringLiteral("max-date")});
+    parser.process(app.arguments());
+
+    const auto minDate = QDate::fromString(parser.value(QStringLiteral("min-date")), Qt::ISODate);
+    const auto maxDate = QDate::fromString(parser.value(QStringLiteral("max-date")), Qt::ISODate);
+
+    KDateComboBox dateComboBox;
+    dateComboBox.setOptions(KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker | KDateComboBox::DateKeywords
+                            | KDateComboBox::WarnOnInvalid);
+    dateComboBox.setMinimumDate(minDate);
+    dateComboBox.setMaximumDate(maxDate);
+    QObject::connect(&dateComboBox, &KDateComboBox::dateEntered, [](const QDate &d) {
+        qDebug() << "dateEntered" << d;
+    });
+    QObject::connect(&dateComboBox, &KDateComboBox::dateChanged, [](const QDate &d) {
+        qDebug() << "dateChanged" << d;
+    });
+    QObject::connect(&dateComboBox, &KDateComboBox::dateEdited, [](const QDate &d) {
+        qDebug() << "dateEdited" << d;
+    });
+    dateComboBox.resize(200, dateComboBox.sizeHint().height());
+    dateComboBox.show();
+    // dateComboBox.setEnabled(false);
+    return app.exec();
+}