Add value diagram calculator saving

DataAccess/DTOs/Converters/ValueDiagrams/ValueDiagramFromDTOConvertStrategy.cs

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+using StructureHelperCommon.Infrastructures.Exceptions;
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Shapes;
+using StructureHelperLogics.NdmCalculations.Analyses.ValueDiagrams;
+
+namespace DataAccess.DTOs
+{
+    public class ValueDiagramFromDTOConvertStrategy : ConvertStrategy<ValueDiagram, ValueDiagramDTO>
+    {
+        private IUpdateStrategy<IValueDiagram> updateStrategy;
+        private IConvertStrategy<Point2DRange, Point2DRangeDTO> pointConvertStrategy;
+
+        public ValueDiagramFromDTOConvertStrategy(IBaseConvertStrategy baseConvertStrategy) : base(baseConvertStrategy)
+        {
+        }
+
+        public override ValueDiagram GetNewItem(ValueDiagramDTO source)
+        {
+            ChildClass = this;
+            NewItem = new(source.Id);
+            InitializeStrategies();
+            updateStrategy.Update(NewItem, source);
+            if (source.Point2DRange is not Point2DRangeDTO point2DRangeDTO)
+            {
+                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(source.Point2DRange));
+            }
+            NewItem.Point2DRange = pointConvertStrategy.Convert(point2DRangeDTO);
+            return NewItem;
+        }
+
+        private void InitializeStrategies()
+        {
+            updateStrategy ??= new ValueDiagramUpdateStrategy() { UpdateChildren = false };
+            pointConvertStrategy ??= new Point2DRangeFromDTOConvertStrategy(this);
+        }
+    }
+}