Added 'live-installer.desktop'.

live-installer.desktop

+[Desktop Entry]
+
+# The type as listed above
+Type=Application
+
+# The version of the desktop entry specification to which this file complies
+Version=1.0
+
+# The name of the application
+Name=17G Linux Installer
+
+# A comment which can/will be used as a tooltip
+Comment=GUI Installation Tool for GNU/Linux
+
+# The path to the folder in which the executable is run
+Path=/usr/lib/live-installer/
+
+# The executable of the application, possibly with arguments.
+Exec=sudo GTK_THEME=Adwaita python3 /usr/lib/live-installer/main.py --window
+
+# The name of the icon that will be used to display this entry
+Icon=live-installer
+
+# Describes whether this application needs to be run in a terminal or not
+Terminal=false
+
+# Describes the categories in which this entry should be shown
+Categories=Settings;System;