Is there some way to insert initial data in to Kratos or Hydra. I think Keto has some a way to provide a file that will be initially added to database. I'd like to insert an identity in Kratos and a client in Hydra at start up. I now have a script that does it using the SDKs but I was wondering if there's some other way that would allow me to set the ids myself so that it's easier to seed a manual testing setup with predefined values for everything.