Rename excel classes

src/main/java/emu/grasscutter/data/excels/RewardData.java

@@ -0,0 +1,27 @@
+package emu.grasscutter.data.excels;
+
+import java.util.List;
+
+import emu.grasscutter.data.GameResource;
+import emu.grasscutter.data.ResourceType;
+import emu.grasscutter.data.common.ItemParamData;
+
+@ResourceType(name = "RewardExcelConfigData.json")
+public class RewardData extends GameResource {
+    public int rewardId;
+    public List<ItemParamData> rewardItemList;
+
+    @Override
+	public int getId() {
+		return rewardId;
+	}
+
+    public List<ItemParamData> getRewardItemList() {
+        return rewardItemList;
+    }
+
+    @Override
+    public void onLoad() {
+    	rewardItemList = rewardItemList.stream().filter(i -> i.getId() > 0).toList();
+    }
+}