[Extension Request] Allow to execute extra actions for group promotions

The extension for group promotions (Member Filter) currently allows to add only filters based on which members are promoted. I'd like to see a new option to also add additional actions.

For example I was asked to add an option to promote members to a specific VIP Group for this application:

Admins can setup to move members into the VIP group, but they can't setup a VIP expiration date, send a PM notification, etc. Being able to execute extra actions means I can run my own code to setup things in the backend as if the member was manually added (which is the only way at the time of posting this topic).