[BREAKING] Item Usage Overhaul

-De-hardcode elemental orb values
-De-hardcode exp items
-Change ShopChest format (temporary, drop system overhaul will replace it entirely)
-Food healing actually uses Ability data for real HP amounts

src/main/java/emu/grasscutter/game/props/ItemUseAction/ItemUseOpenRandomChest.java

@@ -0,0 +1,25 @@
+package emu.grasscutter.game.props.ItemUseAction;
+
+import emu.grasscutter.game.inventory.GameItem;
+import emu.grasscutter.game.props.ActionReason;
+import emu.grasscutter.game.props.ItemUseOp;
+
+public class ItemUseOpenRandomChest extends ItemUseInt {
+    @Override
+    public ItemUseOp getItemUseOp() {
+        return ItemUseOp.ITEM_USE_OPEN_RANDOM_CHEST;
+    }
+
+    public ItemUseOpenRandomChest(String[] useParam) {
+        super(useParam);
+    }
+
+    @Override
+    public boolean useItem(UseItemParams params) {  // cash shop material bundles
+        var rewardItems = params.player.getServer().getShopSystem().getShopChestData(this.i).stream().map(GameItem::new).toList();
+        if (!rewardItems.isEmpty()) {
+            params.player.getInventory().addItems(rewardItems, ActionReason.Shop);
+        }
+        return false;
+    }
+}