ci: add yocto-check-layer helper script

[quaresmajose]

Add the yocto-check-layer with a script to be easy to replicate locally.

Also change:

• add --no-auto It is required if kas runs inside the bsp layer. So to make the yocto-check-layer happy whether it runs inside or outside it is better to have this arg.

• use the base.yml The --machines can be used when we need to check the layer with one or more machines. By default the machine is not required because the yocto-check-layer-wrapper run's on a clean build dir.

[ricardosalveti]

Please extend the commit message from 'ci: call the yocto-check-layer helper script' explaining the reason for the change.

[quaresmajose]

Please extend the commit message from 'ci: call the yocto-check-layer helper script' explaining the reason for the change.

done