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Usage: ./so_long <path/map.ber>

Only use for MacOS, the MLX42 library has several issues with Linux and Windows.

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Map making: The map can be composed of only these 5 characters: 0 for an empty space, 1 for a wall, C for a collectible, E for a map exit, P for the player’s starting position.

• The map must be rectangular.
• The map must be closed/surrounded by walls.
• The map must contain exactly 1 exit, 1 starting position, and at least 1 collectible to be valid.