* Reduce the unhandled promise
* Connect selected calendar to credential
* Write credential to selected calendar
* Type fix
* Handle catching promises in separate threads
* Only call to list calendars if there are no credentialIds
* Changed type of IntegrationCalendar from undef to null
* Adding missing property to getting started
* Also add calendars.tsx
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Co-authored-by: Alex van Andel <me@alexvanandel.com>