Fixed DVL sound and wall raid penetration

Fixed shotguns
Removed RG6 fully

Reduced warhead craft from 15 gp to 12 gp
BTR drops 2 more crates - range reduced slightly
BTR takes 1k more damage from warheads (still requires 3 but will make it quicker to combo with 40mm/explo bolts)
Fixed entirity of attachments not properly hiding gun textures when you load them and not attach them yourself (if theres still an issue please lmk, not testing 20+ guns lol)
Fixed vanilla dayz fences deflecting bullets
Fixed guns going back into body bags
Some more netcode optimizations to reduce lag
Fort Voin fixes
There can only be one ongoing patrol helicopter event now, killing starts its cooldown
Fixed AH6 rockets exploding on its own AH6