Log libinput_config_status errors
Log libinput_config_status errors

This add errors from calls to `libinput_device_config_*_set` to the
debug log. This may be useful when looking at issues related to input
devices and config settings not working.

SirCmpwn/sway,1ace/sway,1ace/sway,1ace/sway,ascent12/sway,ascent12/sway,ascent12/sway