Disarming - Code cleanup

[johnb432]

When merged this pull request will:

• Title.
• Header fixes.
• Optimisations.
• Changes:
  • Use lifeState instead of getVariable "ACE_isUnconscious" for unconsciousness.
  • Players can only disarm units that are either in the same vehicle as them or if player and target are both on foot.
    Not too sure about this change, but imo it's weird to be able to disarm a person in a vehicle, when you are not in it.

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[PabstMirror]

haven't looked at this module in a long time, I know it's a little rough
all your changes look great, thanks