Adds in multiple types of Piggybanks, made with a block of material and bricks. As of right now, there are 8 types of piggybanks: coal, iron, redstone, gold, lapis, emerald, diamond, and netherite. When they contain a large amount of their material, they will start passively generating more of it through interest. You can deposit and withdrawal the materials through the block or nugget forms as well, making it convenient.
