Added the inventory system (basic)
drwxr-xr-x - background
-rwxr-xr-x 113 butaba
-rw-r--r-- 521 butaba.py
drwxr-xr-x - font
-rw-r--r-- 1487 gameobjects.py
-rw-r--r-- 3241 level.py
-rw-r--r-- 13098 maingame.py
drwxr-xr-x - objects
drwxr-xr-x - sprite
-rw-r--r-- 1918 utility.py