Creates a new contact.
The request body must include a name, a phone number, or an email address. If all 3 of these parameters are missing, the contact won't be created.
By default,
if the creation request contains an email already in use by another contact,
the new contact won't be created.
To override this behavior, set allowDuplicates to true.
You can only call this method when authenticated as a Wix app or Wix user identity.