refactor(srp): move camera frame plan policy into managed urp

managed/XCEngine.RenderPipelines.Universal/Rendering/Universal/ScriptableRendererData.cs

@@ -61,6 +61,11 @@ namespace XCEngine.Rendering.Universal
             return GetPipelineRendererAssetKey();
         }
 
+        internal string GetCameraFramePlanPolicyAssetKeyInstance()
+        {
+            return GetCameraFramePlanPolicyAssetKey();
+        }
+
         internal string GetRenderSceneSetupPolicyAssetKeyInstance()
         {
             return GetRenderSceneSetupPolicyAssetKey();
@@ -171,6 +176,11 @@ namespace XCEngine.Rendering.Universal
             return string.Empty;
         }
 
+        protected virtual string GetCameraFramePlanPolicyAssetKey()
+        {
+            return string.Empty;
+        }
+
         protected virtual string GetRenderSceneSetupPolicyAssetKey()
         {
             return string.Empty;