Change keyboard settings if locale is set

This is a reupload of !2365 (closed)

This code sets secondary layout as well as layout switcher combination according to selected locale.

Uses XCB variables for Wayland and 99-keyboard.conf for X11

.ci/codespell.sh

@@ -17,4 +17,5 @@ set -x
 codespell \
 	-L crate \
 	-L hda \
+	-S "./pmb/helpers/locale.py" \
 	.