Fixed bug with sprites when going through tele porters
Fixed bug when snake hits own body - valid move can only be empty space or teleporter
Removed teleporter + color ints as they are not required
Implemented direction based checking for the teleporter and snake - the snake can only enter the teleporter from the direction it is facing
Removed glow around the teleporter and only glow the entry point
Created remaining 2 prefabs and added them to code