Chest icons on the minimap

just a simple implementation of chest icons on the minimap, similar to the one in the first game. it just happens so often that i go through an area and keep hearing a chest spawn every 20 seconds, and no matter where i look i just cant seem to find it, so i think adding chest icons to the minimap would generally be a really nice accessibility thing. obviously it would exclude secret chests or chests hidden behind secret walls until they're discovered, and also chests that haven't spawned yet. i also think other useful minimap icons could be for things like minibosses/soul corrupted mobs, so you can tell where they are when you see their health bar but seemingly cant actually find them anywhere.