Feature request

It would be lovely if Alertmanager's mixins could include two dashboards:

1. Alertmanager monitoring: To monitor Alertmanager itself, it would include metrics that are exposed by Alertmanager.
2. Alertmanager alerts: An informational dashboard that tells us what alerts are currently at the firing state, split by severity. For this one, I think it would be necessary to have Alertmanager's Grafana Datasource plugin, so I'm not sure how viable it could be.