Retrieve router metadata

curl --request GET \
  --url https://api.altostrat.io/api/routers/{router_id}/metadata \
  --header 'Authorization: Bearer <token>'

{
  "status": "<string>",
  "data": {
    "name": "<string>",
    "timezone": "<string>",
    "boardname": "<string>",
    "model": "<string>",
    "routerboard": true,
    "banner_img": "<string>",
    "thumbnail_img": "<string>",
    "slug": "<string>",
    "last_seen_from": "<string>",
    "lat": 123,
    "lng": 123,
    "tunnel_ip": "<string>"
  }
}