Currently there's no clear way to handle arguments that are not passed, or returning information with/without defaults.

This will become simpler when we have storage, but for now, the idea is:

• For input
  • In API the models, set the defaults to the values we want to be defaults
  • In the Core models, set the default to the same
  • When transforming from API -> Core models, exclude unset fields from API (model_dump(exclude_unset=True))

• When fetching the job from k8s
  • Don't pass to the model any of the fields if they match the defaults (this breaks slightly idempotence, because if the user explicitly passed a value that matches the default, it will be lost as a default, but that will be sorted once we have storage)

• For output
  • Add a new parameter include_unset: bool, default to true, that:
    • If passed as true (default), will return the object with all the fields that were not passed and set to defaults on job creation (ex. for jobs list/show)
    • If passed as false, will exclude the fields that were not passed when creating the job and set to their default values (ex. for job dumps or config generate)