[Implemented] Auto !siren- when pulling someone over

[[TC]►Ras◄]

!siren shouldn't be left on at a standstill traffic stop. You don't see the cop car's siren blaring while the officers are talking to the driver in real life either. If anything, implement a new Traffic Stop sign that shows up while the cars are stationary and still not in chase mode. Or simply stick !caution on or don't put anything on if parked off the road (that's what i do now)

I was talking to KaraK about this ingame and i agree with his suggestion.