Nerf to the tommy gun, fixes metal bat, adds constructable glock.

So, I love the idea of cargo being able to make weapons with a fully upgraded autolathe, but now they can't make a 50 round + stun .45 smg and now have a 20 brute 9mm pistol that can easily be used during rev or other situations. I support cargo having a robust endgame if their shit gets upgraded especially since guncargo was nerfed to fuck and back. This pistol is weak as fuck, weaker than a stechkin, for perspective.

This PR does the following:
- Removes construction from the tommy gun, converts it to glock construction, which requires plasteel for the grip. The barrel is still really fucking expensive in the autolathe, but for balance reasons.
- Fixes metal bats fitting in pockets
- Makes switchblade handles require 4 plasteel instead of 10