Fill in Smelting rank information

src/main/java/com/gmail/nossr50/config/hocon/skills/ranks/ConfigRanksSmelting.java

@@ -1,8 +1,22 @@
 package com.gmail.nossr50.config.hocon.skills.ranks;
 
+import ninja.leaping.configurate.objectmapping.Setting;
 import ninja.leaping.configurate.objectmapping.serialize.ConfigSerializable;
 
 @ConfigSerializable
 public class ConfigRanksSmelting {
 
+    @Setting(value = "Fuel-Efficiency")
+    private SkillRankProperty fuelEfficiency = new SkillRankProperty(10, 50, 75);
+
+    @Setting(value = "Understanding-The-Art")
+    private SkillRankProperty understandingTheArt = new SkillRankProperty(10, 25, 35, 50, 65, 75, 85, 100);
+
+    public SkillRankProperty getFuelEfficiency() {
+        return fuelEfficiency;
+    }
+
+    public SkillRankProperty getUnderstandingTheArt() {
+        return understandingTheArt;
+    }
 }