refactor(srp): introduce scriptableobject render asset substrate

managed/XCEngine.ScriptCore/Rendering/Core/RenderPipelineAsset.cs

@@ -2,7 +2,8 @@ using XCEngine;
 
 namespace XCEngine.Rendering
 {
-    public abstract class RenderPipelineAsset : Object
+    public abstract class RenderPipelineAsset
+        : ScriptableObject
     {
         protected RenderPipelineAsset()
         {

managed/XCEngine.ScriptCore/ScriptableObject.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Reflection;
+
+namespace XCEngine
+{
+    public abstract class ScriptableObject : Object
+    {
+        protected ScriptableObject()
+        {
+        }
+
+        public static T CreateInstance<T>()
+            where T : ScriptableObject
+        {
+            return CreateInstance(typeof(T)) as T;
+        }
+
+        public static ScriptableObject CreateInstance(
+            Type scriptableObjectType)
+        {
+            if (scriptableObjectType == null ||
+                !typeof(ScriptableObject)
+                    .IsAssignableFrom(scriptableObjectType))
+            {
+                return null;
+            }
+
+            try
+            {
+                return Activator.CreateInstance(
+                    scriptableObjectType,
+                    BindingFlags.Instance |
+                    BindingFlags.Public |
+                    BindingFlags.NonPublic,
+                    binder: null,
+                    args: Array.Empty<object>(),
+                    culture: null) as ScriptableObject;
+            }
+            catch
+            {
+                return null;
+            }
+        }
+    }
+}