Add(dev): GestureName

Sources/LibMyGesturesBank/TwoHandsDragon.cs

@@ -18,6 +18,8 @@ namespace MyGesturesBank
 
             return handRight.Y > head.Y && handLeft.Y > head.Y;
         }
+
+        public override string GestureName => "Hands on Head";
     }
 
 }