[DONE][Suggestion] Interception protection

[Vangrimar1]

I would suggest adding the ability for X-com vehicles to avoid interception by UFOs. This feature would come in handy for many mods, for example for creating hidden UFO detection squads or stealth interceptors. I would very much like to see such a possibility on the cars of X-com files. Logically, such targets should not attract the attention of aliens, and they should not send a gunship to destroy them.

[Meridian]

Added in OXCE 6.8: https://openxcom.org/forum/index.php/topic,6586.msg134204.html#msg134204

Flag `undetectable`