feat: add cross-engine platform services

package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.cneicy.shrink-datasaver",
-  "version": "2.2.2",
+  "version": "2.3.0",
   "displayName": "ShrinkDataSaver",
   "description": "模块化 Unity 存档与设置管理系统，支持多槽位、链式版本迁移、AES-256 加密、关键模块保护、跨模块查询与事件驱动架构。",
   "unity": "2022.3",
@@ -11,7 +11,8 @@
     "com.unity.nuget.newtonsoft-json": "3.2.1",
     "com.cysharp.unitask": "2.5.0",
     "com.unity.modules.imageconversion": "1.0.0",
-    "com.unity.modules.screencapture": "1.0.0"
+    "com.unity.modules.screencapture": "1.0.0",
+    "com.cneicy.shrink-runtime-abstractions": "0.1.0"
   },
   "keywords": [
     "save",