Give mission makers ability to send mark points over Link-16 from lua

[Rosly]

I see a general lack of possibility to integrate mission elements with avionics. The example form the topic is to be able to give players the sense of a bit more human wingman to share datalink targets.

It would be great if instead of sending cords over voice narration (which player has to manually type into flight computer), mission makers would be able to just trigger mark-point data sent (from lua or event scripting) to player occupied flights.

This way missions would be far more immersive as we would be able to simulate real coordination in the flight during the attack. Now it is a bit funny that during the heat of battle you need to type anything, or you need to bend the narration in a way that target location is known before the attack phase (sadly).