Expansion of marker system

[indig0fox]

It would be great to have the polling system grab markers during the actual mission, even if it were on a 15-30 second scheduled loop, to track markers that are added via script after mission init (such as script-generated markers in dynamic missions, as well as player-placed map markers, etc). Seeing a battlefield evolve alongside the actual players moving, and being able to track marks made not just in the editor, would be a great addition when using this as an AAR program.

[Drofseh]

There are three Marker mission event handlers now, no need to run a loop.

MarkerCreated
MarkerDeleted
MarkerUpdated

https://community.bistudio.com/wiki/Arma_3:_Mission_Event_Handlers#MarkerCreated