Login with sddm/wayland/labwc

First and foremost xfce rocks using Wayland and labwc fantastic work, the labwc config files are a brilliant addition and have cured many issues.

I would suggest the addition of XKB_DEFAULT_MODEL=pc104 to environment it is a generic model that will fit 98% of keyboards in use and for me set # / \ @ to be correctly mapped and make the keyboard useable.

Hi I think this was about the best place to include this and suggest some info in the README.md. I realise that it's not directly to with xfce4-session, but as this package adds the labwc config files to users home and sets up xfce4-wayland-session. I am sharing this as I have read a lot of people being put off due to lack gui login with a Wayland session. With sddm.conf left un-edited if sddm is used an Xorg process starts and stays running, providing the back-end for sddm which effects how quite a lot of apps run in an xfce4-wayland session.

Users can setup sddm via sdd.conf to allow sddm to run with a Wayland back-end and use labwc for sddm compositor.

Changes to sddm.conf that enables a X11 free version of sddm to run giving xfce4-wayland user's a gui login

[General]
DisplayServer=wayland
GreeterEnvironment=QT_WAYLAND_SHELL_INTEGRATION=layer-shell

CompositorCommand=labwc