X509 Authentication with OCI registry

Hi, there currently does not seem to be a way to authenticate with X509 certs with a registry.

The registry does not have password authentication (which seems to be currently supported with the registry config.json that can be passed in via --registry-config flag).

Would it be possible to add a way to specify X509 certs or point to a file path where they are located to authenticate?

Output of `helm version`:
3.8.0

Output of `kubectl version`:
v1.2.4 (with K3S)

Cloud Provider/Platform (AKS, GKE, Minikube etc.):
K3S