Set equipment stats in item slot

Zennysoft.Game.Ma/src/ui/inventory_menu/ItemSlot.cs

@@ -52,6 +52,10 @@ public partial class ItemSlot : Control, IItemSlot
 
     if (item is IStackable stackable)
       SetItemCount(stackable.Count.Value);
+    else if (item is IWeapon weapon)
+      SetEquipmentStat($"ATK {weapon.BonusAttack:D2}");
+    else if (item is IArmor armor)
+      SetEquipmentStat($"DEF {armor.BonusDefense:D2}");
 
     if (item is IEquipableItem equipableItem)
     {
@@ -95,6 +99,8 @@ public partial class ItemSlot : Control, IItemSlot
 
   public void SetItemCount(int count) => ItemCountLabel.Text = count > 0 ? $"x{count:D2}" : string.Empty;
 
+  public void SetEquipmentStat(string str) => ItemCountLabel.Text = str;
+
   public void FocusItem()
   {
     ItemName.GrabFocus();