added tooltips to DisableTrackedVisuals

Assets/UX/Scripts/DisableTrackedVisuals.cs

 public class DisableTrackedVisuals : MonoBehaviour
 {
     [SerializeField]
+    [Tooltip("Disables spawned feature points and the ARPointCloudManager")]
     bool m_DisableFeaturePoints;
 
     public bool disableFeaturePoints
     }
 
     [SerializeField]
+    [Tooltip("Disables spawned planes and ARPlaneManager")]
     bool m_DisablePlaneRendering;
 
     public bool disablePlaneRendering