[External Tools] Allow LTIs to add calendar events by section

Problem statement:

Zoom has added sections to their LTI/API, and you can add meetings for specific sections now, great! That said, Canvas does not support calendar events by section apparently. According to Zoom. So even though students can only see zoom meetings for their section within the Zoom LTI page, they will still see all sections' meetings in the calendar. It's listed as a limitation on the Zoom documentation on adding sections info to the Zoom LTI: https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0063727#h_01GF1D3ZM87KQCG4H6JZEAPQ... For Canvas Calendars, sections are not supported Currently, Canvas only supports calendars for a course, group, or users, but not sections. Can this be fixed?

Proposed solution:

Add an API for calendar events by section

User role(s):

admin