Add-in activation on appointment delete

Idea:

Provide the means to activate the add-in when an appointment gets deleted. This could be called OnAppointmentDeleted.

Scenario:

Having an external system that keeps track of some appointments and needs to be synchronised. The outlook calendar has data ownership and is the source of truth.

Applications:

• Video Conferencing System
• Appointment Scheduling System
• Appointment planing tools
  

Note: Please also support this event (and all the others) on outlook MacOS.