Import Prometheus Rules to Grafana(Enterprise) Managed Alerts

We are moving from prometheus-stack/Grafana to Victoria Metrics/Grafana. We want to benefit from Grafana Managed Alerts (Central managed, notifications policies, Contacts, multiple datasources, …).
We do use the commonly available prometheus alerting/recording rules (kubernetes-mixin) and looking for a way to easily migrate them into natively Grafana Managed Alerts. We configure Grafana via terraform provider. A manual migration requires a lot of effort also for later maintenance/lifecycle.

Is there a similar kubernetes set available for Grafana Enterprise. What is the recommended approach to apply?