Improving entity manager and entity support for a simpler version, made some cleanup on the road to support serialization of world

Game/UnitTest/WorldUnitTest.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <Juliet.h>
+
+#if JULIET_DEBUG
+
+namespace UnitTest
+{
+    void WorldUnitTest();
+} // namespace UnitTest
+
+#endif