changes to SSL ammo box depletion code

issue in the mining cell fabrication

changes reflecting ammo box for mining laser

- Updated the code to use statvalues instead of afflictions. This makes the slowness effects properly stack with other slowness effects.

piercing light gun ammo was missing required skill meaning it crafted super fast without quality.

accidentally forgot the moddir number and the wreck ammo boxes are invisible, fixed whoops

missing sprite hotfix

fixed half shells like in main mod.

added the ammobox slowdown code to the new rare ammo boxes.

small changes to reflect main mod