Get all groups

curl --request GET \
  --url https://cloud.volttime.com/api/v3/sites/{site_uuid}/groups \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": 1,
      "site_id": 9,
      "group_id": null,
      "meter_id": null,
      "total_amps": 18,
      "phases": null,
      "net_type": null,
      "method": "boost",
      "solar_additional_amps": 0,
      "solar_always_charge": false,
      "solar_always_charge_amps": 0,
      "peak_shaving_enabled": false,
      "peak_shaving_threshold": 0,
      "created_at": "2025-07-04T13:42:21.000000Z",
      "updated_at": "2025-07-04T13:42:21.000000Z"
    },
    {
      "id": 2,
      "site_id": 10,
      "group_id": null,
      "meter_id": null,
      "total_amps": 26,
      "phases": null,
      "net_type": null,
      "method": "boost",
      "solar_additional_amps": 0,
      "solar_always_charge": false,
      "solar_always_charge_amps": 0,
      "peak_shaving_enabled": false,
      "peak_shaving_threshold": 0,
      "created_at": "2025-07-04T13:42:21.000000Z",
      "updated_at": "2025-07-04T13:42:21.000000Z"
    }
  ]
}