Add steel block -> steel ingots recipe

Steel blocks in MineTest right now are not useful as storage for iron, since once you craft ingots into a block, you can't craft them back into ingots.

This commit adds a recipe allowing you to do just that, so steel blocks become more than just a decorative block.

mods/default/init.lua

@@ -378,6 +378,13 @@ minetest.register_craft({
 	}
 })
 
+minetest.register_craft({
+	output = 'default:steel_ingot 9',
+	recipe = {
+		{'default:steelblock'},
+	}
+})
+
 minetest.register_craft({
 	output = 'default:steelblock',
 	recipe = {