post https://api.ashbyhq.com/offer.start
The offer.start endpoint creates and returns an offer version instance that can be filled out and submitted
using the offer.create endpoint.
Requires the offersWrite permission.
In order to create a new offer version for a candidate with an in-progress
offer process, you can call the offer.start endpoint and then call the offer.create endpoint to fill out the
newly created offer version form.
