Initial set up for item use

PkmnLib.Dataloader/Models/SerializedItem.cs

@@ -12,6 +12,8 @@ public class SerializedItem
     public string[] Flags { get; set; } = null!;
     public int Price { get; set; }
     public byte FlingPower { get; set; }
+    public SerializedMoveEffect? Effect { get; set; }
+    public SerializedMoveEffect? BattleEffect { get; set; }
     
     [JsonExtensionData]
     public Dictionary<string, JsonElement>? ExtensionData { get; set; }