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/kwin/source/src/utils/serviceutils.h

@@ -0,0 +1,74 @@
+/*
+    KWin - the KDE window manager
+    This file is part of the KDE project.
+
+    SPDX-FileCopyrightText: 2020 Méven Car <meven.car@enioka.com>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#pragma once
+
+// kwin
+#include "utils/executable_path.h"
+// Qt
+#include <QFileInfo>
+#include <QLoggingCategory>
+#include <QProcess>
+// KF
+#include <KApplicationTrader>
+
+namespace KWin
+{
+
+const static QString s_waylandInterfaceName = QStringLiteral("X-KDE-Wayland-Interfaces");
+const static QString s_dbusRestrictedInterfaceName = QStringLiteral("X-KDE-DBUS-Restricted-Interfaces");
+
+static QStringList fetchProcessServiceField(const QString &executablePath, const QString &fieldName)
+{
+    // needed to be able to use the logging category in a header static function
+    static QLoggingCategory KWIN_UTILS("KWIN_UTILS", QtWarningMsg);
+    const auto servicesFound = KApplicationTrader::query([&executablePath](const KService::Ptr &service) {
+        const auto splitCommandList = QProcess::splitCommand(service->exec());
+        if (splitCommandList.isEmpty()) {
+            return false;
+        }
+        return QFileInfo(splitCommandList.first()).canonicalFilePath() == executablePath;
+    });
+
+    if (servicesFound.isEmpty()) {
+        qCDebug(KWIN_UTILS) << "Could not find the desktop file for" << executablePath;
+        return {};
+    }
+
+    const auto fieldValues = servicesFound.first()->property<QStringList>(fieldName);
+    if (KWIN_UTILS().isDebugEnabled()) {
+        qCDebug(KWIN_UTILS) << "Interfaces found for" << executablePath << fieldName << ":" << fieldValues;
+    }
+    return fieldValues;
+}
+
+static inline QStringList fetchRequestedInterfacesForDesktopId(const QString &desktopId)
+{
+    const auto service = KService::serviceByDesktopName(desktopId);
+    if (!service) {
+        return {};
+    }
+    return service->property<QStringList>(s_waylandInterfaceName);
+}
+
+static inline QStringList fetchRequestedInterfaces(const QString &executablePath)
+{
+    return fetchProcessServiceField(executablePath, s_waylandInterfaceName);
+}
+
+static inline QStringList fetchRestrictedDBusInterfacesFromPid(const uint pid)
+{
+    const auto executablePath = executablePathFromPid(pid);
+    if (executablePath.isEmpty()) {
+        return QStringList();
+    }
+    return fetchProcessServiceField(executablePath, s_dbusRestrictedInterfaceName);
+}
+
+} // namespace