Release Helm Chart as OCI artifact

[cthtrifork]

Is your feature request related to a problem? Please describe.
I prefer installing helmcharts through
https://fluxcd.io/flux/components/source/ocirepositories/

Describe the solution you'd like
So we would need something like

helm registry login ghcr.io -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }}
echo "PACKAGE_PATH=$(helm package . | awk '{print $NF}')" >> $GITHUB_ENV
helm push ${{ env.PACKAGE_PATH }} oci://ghcr.io/$GITHUB_REPOSITORY_OWNER

to ensure its on ghcr.io.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
What’s important to note is that the an OCIRepository can be reused across multiple HelmRelease resources, which is useful when deploying multiple microservices using the generic Helm chart.