Publish helm chart also as an OCI package (e.g. on GHCR registry)

[nlamirault]

Could you push the packaged Helm chart also on ghcr.io, so we can pull/install the helm chart like this:

helm install xxx oci://ghcr.io/xxxxxxxx --version x.y.z

[max-rocket-internet]

Why? What's the difference?

[github-actions]

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[pierluigilenoci]

@max-rocket-internet the difference: #554 and #606