keyboard: Use a qwerty virtual keyboard layout
keyboard: Use a qwerty virtual keyboard layout

Add support for a proper qwerty virtual keyboard layout with lowercase
and uppercase state, space and enter button.

Signed-off-by: Jan Arne Petersen <8c3575d1e692bfe9fd3220cb3956503cdd270f15@openismus.com>

xorgy/weston,eyolfson/weston,Gnurou/weston,krezovic/weston,kwm81/weston,Tarnyko/weston-xdg_surface_present,eyolfson/weston,kwm81/weston,xorgy/weston,mchalupa/weston,Gnurou/weston,Tarnyko/weston-xdg_surface_present,jonnylamb/weston,Fantu/compositor-spice,giucam/weston,krezovic/weston,Fantu/compositor-spice,udoprog/weston,udoprog/weston,giucam/weston,Fantu/compositor-spice,sir-murray/weston,jonnylamb/weston,sir-murray/weston,mchalupa/weston