post https://api-stage.onsched.com/v3/resource//externalCalendar
Creates a new external calendar (google, outlook, etc) for a Resource
Requires a valid Resource ID path param
Note: For email services like google the calendarId will almost always be 'primary'
- provider: 'google'
- calendarId: 'primary'
Important: When initially syncing an external calendar, we will generate an authUrl that will be attached to the response object. The resource must USE this link to give us permissions to sync their calendar and our callback from the link will update the external calendar object in our database