KEP 831: Support Helm as an Alternative for Kustomize

[juliusvonkohout]

This is a placeholder issue for the KEP (#832). The actual implementation is tracked in kubeflow/manifests#2730.
@andreyvelich

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.