Support giftPackage BatchUse

Co-authored-by: pris <lilch1022@hotmail.com>

src/main/java/emu/grasscutter/data/common/RewardBoxItemData.java

@@ -1,22 +0,0 @@
-package emu.grasscutter.data.common;
-
-public class RewardBoxItemData {
-    private int Id;
-    private String Count;
-
-    public int getItemId() {
-        return Id;
-    }
-
-    public void setItemId(int itemId) {
-        Id = itemId;
-    }
-
-    public String getItemCount() {
-        return Count;
-    }
-
-    public void setItemCount(String itemCount) {
-        Count = itemCount;
-    }
-}