Get all plans

curl --request GET \
  --url https://api.nomos.energy/plans \
  --header 'Authorization: Bearer <token>'

{
  "object": "list",
  "items": [
    {
      "object": "plan",
      "id": "pln_bn1sny3aczwq5jkz8xcf4klf",
      "name": "Nomos Friends & Family",
      "slug": "nomos",
      "description": "A plan for friends and family",
      "price": 10.99,
      "currency": "EUR",
      "created_at": "2021-01-01T00:00:00.000Z"
    }
  ]
}