Request for approval: new k8s.io/webhookauth staging repo

[Benjamin Petersen]

Greetings!

For KEP-6060 (API Server Authentication to Webhooks) we'd like a new staging repo where we provide a small library to make it very easy for webhook authors to support this feature.

1. New staging repo for the sig-auth subproject: k8s.io/webhookauth
2. PR-140665 represents the code we expect to live in this new package
3. It must be a staging repo to make it easy to use as a dependency for webhooks
4. Issue created for this request: kubernetes/org 6505

Thanks!

~Ben