Added Customizability to Rope Cut Sound.
Added Cut Sound being played when you return to your helicopter after rappelling.

OnPlayerRappelHelicopter(ply, vehicle)
OnPlayerCreatedRappelRope(ply)
OnPlayerRemovedRappelRope(ply)
OnPlayerCutRappelRope(ply, rope)

Check if the player is alive, before rappelling out of the helicopter.

RemoveRope Clientside Fix

Complete Addon Rework

Added rappel_maxrappeldistance command

Made Rappel Gear Not Admin Only