规范了事件系统，完成了实现计分板赋值逻辑

data/fz/advancements/event/on_sneak.json

@@ -10,5 +10,8 @@
                 }
             }
         }
+    },
+    "rewards": {
+        "function": "fz:event/player/on_sneak"
     }
 }