fix: Add missing CLI option to swiftlauncher

The DBus server address selector tries to fetch the address from the
command line parser. But the option was only added to the parser for
CSwiftGuiStdApplications. This resulted in a log message from the parser.

src/swiftlauncher/main.cpp

@@ -40,6 +40,7 @@ int main(int argc, char *argv[])
     Q_UNUSED(qa)
     CGuiApplication a(CApplicationInfo::swiftLauncher(), CApplicationInfo::Laucher, CIcons::swiftLauncher1024());
     a.addVatlibOptions(); // so it can be passed (hand over) to started applications
+    a.addDBusAddressOption(); // required by the dbus server address selector
     const QCommandLineOption installerOption { { "i", "installer" }, QCoreApplication::translate("main", "Installer setup.") };
     a.addParserOption(installerOption);
     if (!a.parseCommandLineArgsAndLoadSetup()) { return EXIT_FAILURE; }