Shotguns, Crafting, Horror Mutator!

- Added shotguns of all rarities
- added and anvil to craft items
- added many new inventory items to craft with
- buffed legendary chests
- you can now see score before end of game if you pause
- you can now see all of your weapons on right side of screen
- ui is a bit more polished
- added horror mutator
- added less is more mutator
- enemies health now scales with levels on all difficulties
- misc bugfixes