feat: extended customized columns for kubectl interaction

[tuunit]

kubectl get stackitcluster
NAME   READY   REGION   ENDPOINT   BASTION IP    AGE
demo   true    eu01     x.x.x.x    x.x.x.x       42m


kubectl get stackitcluster -o wide
NAME   READY   REGION   ENDPOINT   BASTION IP    AGE   NETWORK ID   PROJECT ID
demo   true    eu01     x.x.x.x    x.x.x.x       42m   xxxxxxxxxx   xxxxxxxxxx


kubectl get stackitmachine
NAME                       CLUSTER   READY   STATE    MACHINE TYPE   IP           ZONE     AGE
demo-control-plane-zqc6q   demo      true    ACTIVE   c2i.4          10.0.1.203   eu01-m   39m
demo-md-0-fb9r6-bgq5p      demo      true    ACTIVE   c2i.4          10.0.1.69    eu01-m   39m
demo-md-0-fb9r6-tsc5j      demo      true    ACTIVE   c2i.4          10.0.1.86    eu01-m   39m


kubectl get stackitmachinetemplates.infrastructure.cluster.x-k8s.io
NAME                 MACHINE TYPE   IMAGE ID                               DISK GIB   ZONE   AGE
demo-control-plane   c2i.4          cc5ec888-ee66-4319-8b69-1afccceadeb9   50                42m
demo-md-0            c2i.4          cc5ec888-ee66-4319-8b69-1afccceadeb9   50                42m


kubectl get stackitmachinetemplates.infrastructure.cluster.x-k8s.io -o wide
NAME                 MACHINE TYPE   IMAGE ID                               DISK GIB   ZONE   AGE   NETWORK ID
demo-control-plane   c2i.4          cc5ec888-ee66-4319-8b69-1afccceadeb9   50                42m   xxxxxxxxxx
demo-md-0            c2i.4          cc5ec888-ee66-4319-8b69-1afccceadeb9   50                42m   xxxxxxxxxx

[Herbaert]

as discussed lgtm