Finally added an inventory for the game

Alright, sorry for not posting for a while. I've been busy again with some stuff so I couldn't really make much progress. But now that exams are finally over, I can spend more time on the game.

Yesterday I finally tried making an inventory system for the game so you can track quest items and your money. It was HARD to make, I used code from an inventory demo and heavily modified it to fit the game's aesthetic, messing up a lot of stuff in the process.

Anyway, aside from a few bugs popping here and there (Please don't open the inventory while in a choice menu), it should be functional now. It should come with the next update in a few days (hopefully fixed by then... if not, I'll release a patch to fix it).