Fixed offset rotation sorta, now casing align with the ejection port for the most part. Turrets still need work in this regard.
Fixed some texture asset names.
FBI shotgunners make spent casings, but they are jank since NPC rotations don't match with their rendered rotation for some reason (ie NPC is facing player when rendered visually, but the actual entity isn't).
Most issues are fixed and the new guns are implemented. A few bugs are still present, but they're minor. There are some code `TODO` notes I added, notably in the `HbmPotions` class.
