Securing APIService for Visibility Feature

[kannon92]

What would you like to be added:
https://github.com/kubernetes-sigs/kueue/blob/main/config/components/visibility/apiservice_v1beta1.yaml

APIService skips TLS checks so we will not enable this feature for our cluster.

Kueue should provide support for securing this service using certificates.

Why is this needed:

For my organization, any endpoint not guarded by TLS or using insecure options is flagged as a potential security vulnerability. Since this is an optional feature we are not deploying this in our Kueue instalation. It would be a good feature to have.

Completion requirements:

This enhancement requires the following artifacts:

• Design doc
• API change
• Docs update

The artifacts should be linked in subsequent comments.