refactor Call Scheduling

[geleeroyale]

Buddy Review Call Scheduling

Current Process:
The buddy and the contributor will find a common time to do their buddy review call.
Nico manually asks the contributor when the buddy call date is. Nico is also not fully aware if there are postponements of change of dates.

Problem:
Nico is not fully aware of the exact buddy call date and if the buddy call actually happened.
The purpose of Nico knowing is for him to assist the buddies and gather enough feedback before the buddy call.

Proposed Solution:
A bot will prompt the buddy and contributor to select a time and date, and this will be integrated to the Google Calendar.
Once the final date is set, a calendar invite will then be sent to the buddies, Nico.
Should there be changes, the calendar invite will also be updated.