Feature request: make mobile SAMs change their position when detecting HARMs

[132nd-Professor]

When mobile SAMs, like the SA-15, detects an incoming missiles, it would be nice to have it change position while (or instead of) switching off its radar.

• SAM detects HARM
• Unit picks a random direction and distance, which create a new waypoint
• Unit travels to the waypoint at high speed
• options to temporarily disable the radar are unaffected by this algorithm

For modern, mobile units, it may be sensible to make this behaviour the default.