[Rendering] Properly register Xenko.Rendering in AssemblyRegistry (fixes #409 and fixes #410)

sources/engine/Xenko.Rendering/Module.cs

@@ -0,0 +1,17 @@
+// Copyright (c) Xenko contributors (https://xenko.com)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+using System.Reflection;
+using Xenko.Core;
+using Xenko.Core.Reflection;
+
+namespace Xenko.Rendering
+{
+    internal class Module
+    {
+        [ModuleInitializer]
+        public static void Initialize()
+        {
+            AssemblyRegistry.Register(typeof(Module).GetTypeInfo().Assembly, AssemblyCommonCategories.Assets);
+        }
+    }
+}