修复 Unity 编译依赖和测试程序集配置

My project/Packages/manifest.json

@@ -1,5 +1,15 @@
 {
+  "scopedRegistries": [
+    {
+      "name": "Unity NuGet",
+      "url": "https://unitynuget-registry.openupm.com",
+      "scopes": [
+        "org.nuget"
+      ]
+    }
+  ],
   "dependencies": {
+    "com.cysharp.r3": "https://github.com/Cysharp/R3.git?path=src/R3.Unity/Assets/R3.Unity#1.3.0",
     "com.unity.collab-proxy": "2.12.4",
     "com.unity.feature.development": "1.0.1",
     "com.unity.textmeshpro": "3.0.7",
@@ -36,6 +46,7 @@
     "com.unity.modules.video": "1.0.0",
     "com.unity.modules.vr": "1.0.0",
     "com.unity.modules.wind": "1.0.0",
-    "com.unity.modules.xr": "1.0.0"
+    "com.unity.modules.xr": "1.0.0",
+    "org.nuget.r3": "1.3.0"
   }
 }