Returns details about all accessible panels.
$ curl -i https://app.verdigris.co/api/v1/panels -H "Authorization: Token token=<access_token>"
{ "panels": [ { "id": 169, "name": "Panel 1", "voltage": 120, "phases": "3", "building_id": 166, "circuit_ids": [ 1765, 1766, 1767 ] }, { "id": 170, "name": "Panel 2", "voltage": 120, "phases": "3", "building_id": 166, "circuit_ids": [ 1807, 1808, 1809 ] } ] }