Adding in Performance Tick Data that can be propagated out for external consumption

Author: kvassall-unity

com.unity.multiplayer.mlapi/Runtime/Core/NetworkingManager.cs

@@ -80,6 +80,10 @@ public class NetworkingManager : MonoBehaviour, INetworkUpdateSystem
 
         public event PerformanceDataEventHandler OnPerformanceDataEvent;
 
+        public delegate void PerformanceDataEventHandler(PerformanceTickData profilerData);
+
+        public event PerformanceDataEventHandler OnPerformanceDataEvent;
+
         /// <summary>
         /// A synchronized time, represents the time in seconds since the server application started. Is replicated across all clients
         /// </summary>