完善scoreboard、初步实现config

data/fz/advancements/unsneak.json

@@ -7,7 +7,7 @@
                     "type_specific": {
                         "type": "player",
                         "advancements": {
-                            "adventure"
+                            "fz:config/sneak": true
                         }
                     },
                     "flags": {
@@ -16,5 +16,8 @@
                 }
             }
         }
+    },
+    "rewards": {
+        "function": "fz:event/on_unsneak"
     }
 }