restore diag profile tooltips

Author: David Kline (ANALOG)

Assets/MixedRealityToolkit/Definitions/Diagnostics/MixedRealityDiagnosticsProfile.cs

@@ -15,6 +15,7 @@ public class MixedRealityDiagnosticsProfile : BaseMixedRealityProfile
     {
         [SerializeField]
         [FormerlySerializedAs("visible")]
+        [Tooltip("Display all enabled diagnostics")]
         private bool showDiagnostics = false;
 
         /// <summary>
@@ -23,6 +24,7 @@ public class MixedRealityDiagnosticsProfile : BaseMixedRealityProfile
         public bool ShowDiagnostics => showDiagnostics;
 
         [SerializeField]
+        [Tooltip("Display profiler")]
         private bool showProfiler = false;
 
         /// <summary>