break apko,melange,wolfictl images, point to sdk image

[imjasonh]

These single-tool images don't serve much of a purpose when the sdk image has all those tools and more. We've tried to converge on the sdk image, but we don't know what might still be using these.

This builds the image so that they'll fail when invoked, and tell folks clearly that they should use ghcr.io/wolfi-dev/sdk instead.

$ cd images/apko
$ terraform init && terraform apply -auto-approve
$ docker run --rm ttl.sh/jason:latest@sha256:182914446ec4100a293853f6d99324755a454c1dd0b8e38c87251a608e79765c
PLEASE USE ghcr.io/wolfi-dev/sdk INSTEAD
$ echo $?
1

[imjasonh]

Looks like this will need #115 to be able to pass presubmit.

[imjasonh]

This will also require tweaks to the required CI checks, since we're not melange-building apko or melange anymore.

edit: done