Start mobequip refactor

src/engine/objects/Contract.java

@@ -35,7 +35,7 @@ public class Contract extends AbstractGameObject {
     private ArrayList<Integer> npcModTypeTable = new ArrayList<>();
     private ArrayList<Integer> npcModSuffixTable = new ArrayList<>();
     private ArrayList<Byte> itemModTable = new ArrayList<>();
-    private ArrayList<MobEquipment> sellInventory = new ArrayList<>();
+    private ArrayList<Item> sellInventory = new ArrayList<>();
     private EnumBitSet<Enum.BuildingGroup> allowedBuildings;
     private ArrayList<Integer> buyItemType = new ArrayList<>();
     private ArrayList<Integer> buySkillToken = new ArrayList<>();
@@ -197,7 +197,7 @@ public class Contract extends AbstractGameObject {
         return itemModTable;
     }
 
-    public ArrayList<MobEquipment> getSellInventory() {
+    public ArrayList<Item> getSellInventory() {
         return this.sellInventory;
     }