Add calendar to user calendar list
documentedInserts an existing calendar into the user's calendar list.
POST /users/me/calendarListCalendarListno implementation yet0 runsInput
calendar_id*
Calendar ID to insert
Calendar ID to add (e.g. example@group.calendar.google.com)
color_id
Optional colorId
Color ID (optional)
Calls Google Calendar as you (your API key is your account); keychains.dev holds the credentials.