- Added Textures of all 16 ingot types

- Tweaked ore hardness
- Inititalized lignit as furnace burning material

src/main/java/items/ItemSlagironIngot.java

@@ -0,0 +1,8 @@
+package items;
+
+public class ItemSlagironIngot extends BasicItem {
+
+    public ItemSlagironIngot() {
+        super("slagiron_ingot");
+    }
+}