refactor(lombok): add Getter where possible

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

@@ -2,10 +2,12 @@ package emu.grasscutter.data.excels;
 
 import emu.grasscutter.data.*;
 import emu.grasscutter.data.ResourceType.LoadPriority;
+import lombok.Getter;
 
 @ResourceType(name = "FetterCharacterCardExcelConfigData.json", loadPriority = LoadPriority.HIGHEST)
 public class FetterCharacterCardData extends GameResource {
     private int avatarId;
+    @Getter
     private int rewardId;
 
     @Override
@@ -13,10 +15,6 @@ public class FetterCharacterCardData extends GameResource {
         return avatarId;
     }
 
-    public int getRewardId() {
-        return rewardId;
-    }
-
     @Override
     public void onLoad() {}
 }