Read the Screensaver-Configuration (enabled and lock) on GNOME and KDE

Read the Screensaver-Configuration enabled and lock on GNOME and KDE. SPDX-FileCopyrightText: 2010 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...