Inventory

Added a pause menu, and implemented the item pickups into a visualized inventory system. Currently, for a given item you can do the following:

• Use items (consumables)
• View items
• Remove items

And that should be the extent of the system. I'm planning for every pickup to have a 3D model that can be analyzed, as well as notes and such for that deep deep lore we're planning. Using items in the game world removes items from your inventory. 

Flashlight

I added a flashlight to the game as well! Use F to toggle it on and off. It uses batteries, so be on the hunt for those throughout the game!

Monster AI+

Implemented patrolling and targeting only after the player falls within range of the monster.