refactor(srp): move universal shadow ownership into asset layer

- track missing render graph scriptcore sources and rendering utility headers

- expose camera request directional shadow control to managed universal asset configuration

managed/XCEngine.ScriptCore/Rendering/Graph/RenderGraphTextureDesc.cs

@@ -0,0 +1,20 @@
+namespace XCEngine.Rendering
+{
+    public struct RenderGraphTextureDesc
+    {
+        public uint width;
+        public uint height;
+        public uint format;
+        public uint textureType;
+        public uint sampleCount;
+        public uint sampleQuality;
+
+        public bool IsValid()
+        {
+            return width > 0u &&
+                   height > 0u &&
+                   format > 0u &&
+                   sampleCount > 0u;
+        }
+    }
+}