Alignment: implement alternative metrics for focus calibration

Signed-off-by: Nicola VIGANÒ <nicola.vigano@esrf.fr>
Status Job ID Name Coverage
  Test
passed #127456
docker
linux_docker

00:04:38

passed #127455
shell
linux_shell

00:00:41

 
  Deploy
passed #127457
shell
pages_shell

00:00:20