Add value diagram calculator saving

DataAccess/DTOs/Converters/Shapes/Point2DRangeToDTOConvertStrategy.cs

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+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Shapes;
+
+namespace DataAccess.DTOs
+{
+    public class Point2DRangeToDTOConvertStrategy : ConvertStrategy<Point2DRangeDTO, IPoint2DRange>
+    {
+        private IConvertStrategy<Point2DDTO, IPoint2D> pointConvertStrategy = new Point2DToDTOConvertStrategy();
+
+        public Point2DRangeToDTOConvertStrategy(IBaseConvertStrategy baseConvertStrategy) : base(baseConvertStrategy)
+        {
+        }
+
+        public override Point2DRangeDTO GetNewItem(IPoint2DRange source)
+        {
+            ChildClass = this;
+            NewItem = new(source.Id)
+            {
+                StartPoint = pointConvertStrategy.Convert(source.StartPoint),
+                EndPoint = pointConvertStrategy.Convert(source.EndPoint)
+            };
+            return NewItem;
+        }
+    }
+}