Feature: Add Kyverno CLI?

[dangreenlee]

The Kyverno Command Line Interface (CLI) is designed to validate and test policy behavior to resources prior to adding them to a cluster. The CLI can be used in CI/CD pipelines to assist with the resource authoring process to ensure they conform to standards prior to them being deployed.

https://kyverno.io/docs/kyverno-cli/#cli-commands

This would be helpful for us as we begin to deploy Kyverno and policies into our cluster to check our application manifests against deployed Kyverno policies and ensure new applications/manifest comply before merging.

Would be glad to open a PR and add Kyverno.