List Namespaces

curl --request GET \
  --url https://hub.oxen.ai/api/namespaces \
  --header 'Authorization: Bearer <token>'

{
  "namespaces": [
    {
      "name": "my_namespace"
    },
    {
      "name": "oxen"
    }
  ],
  "status": "success",
  "status_message": "resource_found"
}