Feature Request: Add Healthchecks to the Grafana Dashboard

[itay-grudev]

It would be quite useful if the Grafana Dashboard shows health status of different components of a database cluster and the operator.

At minimum the following should be covered:

• CPU
• Memory
• Connections
• Storage
• Number of Ready replicas
• Backups
• Operator status

[itay-grudev]

Closed as completed in https://github.com/cloudnative-pg/grafana-dashboards.