feat: add cross-engine runtime support

DataSaverEventBusBridge.cs

@@ -1,7 +1,9 @@
 #nullable enable
 
 using ShrinkEventBus;
+#if UNITY_5_3_OR_NEWER
 using UnityEngine;
+#endif
 
 namespace ShrinkDataSaver.Integration
 {
@@ -15,7 +17,9 @@ namespace ShrinkDataSaver.Integration
 
         public static bool IsRegistered => _registered;
 
+#if UNITY_5_3_OR_NEWER
         [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
+#endif
         private static void ResetStaticState()
         {
             Unregister();

package.json

@@ -1,6 +1,6 @@
 {
   "name": "com.cneicy.shrink-datasaver-integration-eventbus",
-  "version": "2.1.3",
+  "version": "2.2.0",
   "displayName": "ShrinkDataSaver - EventBus Integration",
   "description": "ShrinkDataSaver 与 ShrinkEventBus 的桥接层，自动将存档/设置事件映射到事件总线。",
   "unity": "2022.3",
@@ -8,10 +8,10 @@
   "changelogUrl": "https://git.crash.work/ShrinkSDK/ShrinkDataSaver.Integration.EventBus/src/branch/main/CHANGELOG.md",
   "licensesUrl": "https://github.com/cneicy/ShrinkDataSaver.Integration.EventBus/blob/main/LICENSE",
   "dependencies": {
-    "com.cneicy.shrink-datasaver": "2.2.2",
-    "com.cneicy.shrink-context-core": "0.1.0",
+    "com.cneicy.shrink-datasaver": "2.3.0",
+    "com.cneicy.shrink-context-core": "0.2.0",
     "com.cysharp.unitask": "2.5.10",
-    "com.cneicy.shrink-eventbus": "2.0.1"
+    "com.cneicy.shrink-eventbus": "2.1.0"
   },
   "keywords": [
     "save",