get https://sandbox-api.onsched.com/setup/v1/locations//email/templates
Returns a list of email templates that may be customized. If the template has been customized, the customized property is true. The scope parameter indicates if the email
template has been customized at Business Location or Company level. Only when querying the primary business location will company scope customized templates display.
Otherwise, the scope shows if a template has been customized at the business location level.