Use the new kas menu plugin to present available image options to the user. This also allows to model their dependencies, specifically as not all options are supported on all boards.
Signed-off-by: Jan Kiszka <jan.kiszka@...> ---
Only for preview as the underlying kas feature is not yet merged. Try it out by fetching kas-container from the kas next branch and then run
KAS_IMAGE_VERSION=next kas-container menu
This is the first more complex layer modeled via kconfig/kas-menu. I think it nicely demonstrates the potential of this approach.