add range of 0-5 sec for sample rate

Author: David Kline (ANALOG)

Assets/MixedRealityToolkit/Definitions/Diagnostics/MixedRealityDiagnosticsProfile.cs

@@ -36,6 +36,7 @@ public class MixedRealityDiagnosticsProfile : BaseMixedRealityProfile
         [SerializeField]
         [FormerlySerializedAs("frameRateDuration")]
         [Tooltip("The amount of time, in seconds, to collect frames for frame rate calculation.")]
+        [Range(0, 5)]
         private float frameSampleRate = 0.1f;
 
         /// <summary>