Support for Ephemeral Containers

[npdgm]

This may be considered as a very low priority. I don't know if any operator makes use of ephemeral containers yet.

Currently kuik will not rewrite image locations for ephemeralContainer:

❯ kubectl run test --image=nginx --restart=Never

❯ kubectl debug -it test --image=busybox --target=test

❯ kubectl get pod test -o jsonpath="{.spec.containers[*].image} ; {.spec.ephemeralContainers[*].image}"
localhost:7439/nginx ; busybox⏎