Add empty directory 'overlays/armhf-development'

Add empty directory to allow to work 'overlay' action for armhf.

Signed-off-by: Héctor Orón Martínez <hector.oron@collabora.co.uk>
Reviewed-by: Andrew Shadura <andrew.shadura@collabora.co.uk>
Reviewed-by: Denis Pynkin <denis.pynkin@collabora.co.uk>
Differential Revision: https://phabricator.apertis.org/D7286