[增加]1. 增加微信库的引用

Author: AlianBlank

Runtime/GravityEngine.Runtime.asmdef

@@ -1,6 +1,8 @@
 {
     "name": "GravityEngine.Runtime",
-    "references": [],
+    "references": [
+      "Wx"
+    ],
     "rootNamespace": "GravityEngine.Runtime",
     "includePlatforms": [],
     "excludePlatforms": [],
@@ -11,4 +13,4 @@
     "defineConstraints": [],
     "versionDefines": [],
     "noEngineReferences": false
-}
+}