Overview of the Feature Request
For replicating JSF, there is button could be toggled to set a template as default or not. Therefore, a new API is needed to set a template as default or not default

What kind of user is the feature intended for?
(Example users roles: API User, Curator, Depositor, Guest, Superuser, Sysadmin)
API User

What inspired the request?
spa.q3

What existing behavior do you want changed?

Any brand new behavior do you want to add to Dataverse?

Any open or closed issues related to this feature request?

Are you thinking about creating a pull request for this feature?
Help is always welcome, is this feature something you or your organization plan to implement?