refactor(srp): move native scene feature registration into backend setup

engine/src/Rendering/Pipelines/Internal/BuiltinForwardSceneSetup.h

@@ -1,14 +1,19 @@
 #pragma once
 
+#include <memory>
+
 namespace XCEngine {
 namespace Rendering {
 
-class SceneRenderFeatureHost;
-
 namespace Pipelines {
+class BuiltinForwardPipeline;
+
 namespace Internal {
 
-void RegisterBuiltinForwardSceneFeatures(SceneRenderFeatureHost& featureHost);
+void ConfigureBuiltinForwardPipeline(
+    BuiltinForwardPipeline& pipeline);
+std::unique_ptr<BuiltinForwardPipeline>
+CreateConfiguredBuiltinForwardPipeline();
 
 } // namespace Internal
 } // namespace Pipelines