Profiler and LocalToWorldThreadedSystem

Added a simple profiler
Testing LocalToWorldSystem with Parallel execution for root nodes

Nerfed.Runtime/Engine.cs

@@ -111,10 +111,14 @@ public static class Engine
 
     private static void Tick()
     {
+        Profiler.BeginFrame();
+
         AdvanceElapsedTime();
 
         if (framerateCapped)
         {
+            Profiler.BeginSample("framerateCapped");
+
             /* We want to wait until the framerate cap,
              * but we don't want to oversleep. Requesting repeated 1ms sleeps and
              * seeing how long we actually slept for lets us estimate the worst case
@@ -137,6 +141,8 @@ public static class Engine
                 Thread.SpinWait(1);
                 AdvanceElapsedTime();
             }
+
+            Profiler.EndSample();
         }
 
         // Do not let any step take longer than our maximum.
@@ -149,6 +155,7 @@ public static class Engine
         {
             while (accumulatedUpdateTime >= Timestep)
             {
+                Profiler.BeginSample("Update");
                 Keyboard.Update();
                 Mouse.Update();
                 GamePad.Update();
@@ -156,19 +163,26 @@ public static class Engine
                 ProcessSDLEvents();
 
                 // Tick game here...
+                Profiler.BeginSample("OnUpdate");
                 OnUpdate?.Invoke();
+                Profiler.EndSample();
 
                 AudioDevice.WakeThread();
                 accumulatedUpdateTime -= Timestep;
+                Profiler.EndSample();
             }
 
             double alpha = accumulatedUpdateTime / Timestep;
 
             // Render here..
+            Profiler.BeginSample("OnRender");
             OnRender?.Invoke();
+            Profiler.EndSample();
 
             accumulatedDrawTime -= framerateCapTimeSpan;
         }
+
+        Profiler.EndFrame();
     }
 
     private static TimeSpan AdvanceElapsedTime()