Item holy and all element implementation, still need to work out some of the math for it

Fix bonus defense for weapons

Zennysoft.Game.Ma.Implementation/Equipment/EquipableItem.cs

@@ -18,5 +18,5 @@ public abstract partial class EquipableItem : InventoryItem
   [Save("bonus_luck_stats")]
   public virtual int BonusLuck { get; }
   [Save("bonus_elemental_resist_stats")]
-  public virtual ElementalResistanceSet ElementalResistance { get; } = new ElementalResistanceSet(0, 0, 0, 0, 0);
+  public virtual ElementalResistanceSet ElementalResistance { get; } = new ElementalResistanceSet(0, 0, 0, 0, 0, 0);
 }

Zennysoft.Game.Ma.Implementation/Equipment/Tags/WeaponTag.cs

@@ -8,4 +8,5 @@ public enum WeaponTag
   IgnoreDefense,
   Knockback,
   InverseHPAttackPower,
+  RustChanceSelfAndEnemy
 }