Add Engine::UpdateCount to sync gameplay logic updates with game loop rather than draw frames

Source/Engine/Engine/Engine.cpp

@@ -60,6 +60,7 @@ namespace EngineImpl
 
 DateTime Engine::StartupTime;
 bool Engine::HasFocus = false;
+uint64 Engine::UpdateCount = 0;
 uint64 Engine::FrameCount = 0;
 Action Engine::FixedUpdate;
 Action Engine::Update;
@@ -296,6 +297,8 @@ void Engine::OnUpdate()
 {
     PROFILE_CPU_NAMED("Update");
 
+    UpdateCount++;
+
     // Update application (will gather data and other platform related events)
     {
         PROFILE_CPU_NAMED("Platform.Tick");