Stun gun SWEP

Added support for my_hat_stinks's Handcuff addon (https://scriptfodder.com/scripts/view/910/cuffs-handcuffs-and-hand-ties)

http://f.donkie.co/Smk9x

Core files updated, you can keep old config file but you won't be able to use some of the new features.

1. Some code cleanup
2. Added freeze time after unragdoll, customizable in config
3. Updated ragdolling visuals, bones, player color and decals are transferred properly to ragdoll now!
4. Added a new optional ragdoll effect where it shakes instead of rolls!

Config changes:

1. STUNGUN.ShouldRoll has been replaced by STUNGUN.PhysEffect
2. Added STUNGUN.FreezeTime

Initial version.