Graph for Device Controller Calls

[ben-dz]

It would be good to add a chart like this one from grafana that matches up with "device stopped calling controller" errors. I'd suggest adding it to the device page, and the device info sidebar in the topo tool.

Add a controller calls chart, like https://doublezero.grafana.net/d/fe8th04sdfk00c/doublezero-controller-metrics?orgId=1&from=now-24h&to=now&timezone=browser&var-env=mainnet-beta&refresh=1m&viewPanel=panel-3