[plasma-shell] Register org.kde.plasma_shell in the bus

This is needed to let KLauncher know that Plasma Shell has been
executed.
We are using plasma_shell because there is a bug in KDBusService
that prevents us from using plasma-shell. Fix is already done
but repositoiries at this very moment are frozen.

src/shell/main.cpp

@@ -22,6 +22,7 @@
 #include <QtQml/QQmlDebuggingEnabler>
 #include <QDebug>
 
+#include <kdbusservice.h>
 #include <klocalizedstring.h>
 
 #include "shellpluginloader.h"
@@ -34,8 +35,11 @@ static QCommandLineParser parser;
 int main(int argc, char** argv)
 {
     QApplication app(argc, argv);
+    app.setApplicationName("plasma_shell");
+    app.setOrganizationDomain("kde.org");
     app.setApplicationVersion(version);
     parser.setApplicationDescription(description);
+    KDBusService service(KDBusService::Unique);
 
     QCommandLineOption dbg(QStringList() << QStringLiteral("d") <<
                            QStringLiteral("qmljsdebugger"),

src/shell/plasma-shell.desktop

@@ -12,5 +12,6 @@ Name[uk]=Робочий простір стільниці Плазми
 Name[x-test]=xxPlasma Desktop Workspacexx
 Type=Application
 X-KDE-StartupNotify=false
+X-DBUS-ServiceName=org.kde.plasma_shell
 OnlyShowIn=KDE;
 X-KDE-autostart-phase=0