Added StartupWMClass
Without this parameter, Siril windows are not associated to the launchbar icon (no dot under the launch icon) when you have a Wayland based session (it only work with Xorg) which is the default in the last Ubuntu.
Without this parameter, Siril windows are not associated to the launchbar icon (no dot under the launch icon) when you have a Wayland based session (it only work with Xorg) which is the default in the last Ubuntu.