keyboard: add the missing symbols layout, fix arabic layout

The "symbols" modifier key of weston-keyboard is no longer
inactive, but will provide an additionnal layout with
numerals and special characters.

Fix the Arabic keyboard, which was rendering out of the
bounds, and now use the Arabic IBM PC keyboard as a
reference for its standard and new symbols layouts.

https://bugs.freedesktop.org/show_bug.cgi?id=71757

Signed-off-by: Manuel Bachmann <manuel.bachmann@open.eurogiciel.org>
1 file changed