[feature][datazoom] 增加DataZoom的MarqueeStyle支持框选区域

Runtime/Component/DataZoom/DataZoomContext.cs

@@ -22,5 +22,10 @@ namespace XCharts.Runtime
         /// </summary>
         public double endValue { get; set; }
         public bool invert { get; set; }
+
+        public bool isMarqueeDrag { get; set; }
+        public Vector3 marqueeStartPos { get; set; }
+        public Vector3 marqueeEndPos { get; set; }
+        public Rect marqueeRect { get; set; }
     }
 }