stackit_ske_kubeconfig_idp resource #1706

Problem description

The current stackit_ske_kubeconfig resource exposes a short-lived admin kubeconfig. We'd like to be able to run the (plan) pipeline with less credentials than that, so we'd like to be able to request a kubeconfig that uses IDP instead.

Proposed solution

A stackit_ske_kubeconfig_idp (ephemeral?) resource.

Alternative solutions (optional)

N/A

Additional information

Feel free to add any additional information here.

#1448