Milestone: Migrate Grafana dashboards

[kasteph]

eta: 2023-12-31

description: We need to move dashboards from the Protocol Labs account to the Sentinel account. Transferring should be straightforward (copy the JSON definition of each dashboard).

### Tasks
- [ ] connect Postgres and BigQuery data sources
- [ ] connect Grafana Agent data sources (for filcryo and data-platform)
- [ ] transfer Sentinel Alerts [dashboard](https://protocollabs.grafana.net/d/-NdXhPQMz/sentinel-alerts?orgId=1&refresh=30m&from=now-2d&to=now)
- [ ] transfer Sentinel deployment [dashboard](https://protocollabs.grafana.net/d/DOyYda1Vz/sentinel-deployment-summary-gcp?orgId=1&refresh=30m&from=now-7d&to=now)
- [ ] transfer KPIs [dashboard](https://protocollabs.grafana.net/d/z0y9BA54z/sentinel-kpis?orgId=1) 
- [ ] transfer Mainnet analysis [dashboard](https://protocollabs.grafana.net/d/m1P_m92Gz/mainnet-analysis?orgId=1)