fine-tune

record fine-tune {
  created-at: s32,
  events: option​<list​<fine-tune-event>>,
  fine-tuned-model: string,
  hyperparams: fine-tune-hyperparams,
  id: string,
  model: string,
  object: string,
  organization-id: string,
  result-files: list​<file>,
  status: string,
  training-files: list​<file>,
  updated-at: s32,
  validation-files: list​<file>,
}