[TaCZ] FirstAid Compat

Initial release of [TaCZ] First Aid Compat.

No more random damage distribution.

• Precise 3D hitbox detection for TacZ bullets (Head, Body, Arms, Legs, Feet).
• Custom damage distribution for explosions based on proximity.
• Damage spillover mechanics from limbs to torso.
  • 80% from arm to torso
  • 80% from leg to torso
  • 80% from foot to leg
  • 40% from foot to torso
• Custom handling for explosives (grenades, RPGs) with realistic proximity-based limb damage calculation.
• Proper armor protection calculations per bodypart. (tested with LRarmor)