Support clusters that require additional authentication

[janlepsky]

Cluster connections are currently added by uploading a kubeconfig. For some providers, such as AWS, Azure, or GCP, this is not enough. They require additional authentication through service accounts. punq should support these providers by adding an authentication option (+ kubeconfig) when adding a cluster.

[joebowbeer]

Does punq already support client-go-credential-plugins like Lens does?

https://kubernetes.io/docs/reference/config-api/kubeconfig.v1/#ExecConfig

https://kubernetes.io/docs/reference/access-authn-authz/authentication/#configuration

[janlepsky]

@joebowbeer Unfortunately punq doesn't support this yet but thanks for your input! We'll consider integrating this in one of the next versions.