Add option to call a Post-scripting VI when creating an Event

[Photon_Dan]

When creating a new Event, it would be empowering to be able to automatically call a VI immediately after the scripting completes. The idea is based on the behavior of the Pre- and Post-Build VI calling ability of the application build process. The implementation should provide an option to specify a VI to call and an option to generate a VI with the proper controls already on the connector pane. A proposed set of such controls would be VI references or paths to the Event VI or VIs (Broadcast or Request... or both for Round Trip) and VI references or paths to the Tester VI and RT Tester VI (if there is one).

Adding the feature would allow developers using DQMH to create their own extensions to the built-in scripting. For example, if the other feature request here is not accepted, this one would allow a developer to implement it on our own.

[JoGra]

This would be very useful, especially around custom helper loops. 
When using cluster of event registration refnums with helper loops or a JKI State Machine the scripted updates of the event handler don't work anymore. A custom post-scripting vi could solve that.