Add beam shear converting to DTO

DataAccess/DTOs/DTOEntities/NdmCrossSections/CrossSectionDTO.cs

@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+using StructureHelperCommon.Models.WorkPlanes;
+using StructureHelperLogics.Models.CrossSections;
+
+namespace DataAccess.DTOs
+{
+    public class CrossSectionDTO : ICrossSection
+    {
+        [JsonProperty("Id")]
+        public Guid Id { get; set; }
+        [JsonProperty("SectionRepository")]
+        public ICrossSectionRepository SectionRepository { get; set; }
+
+        public IWorkPlaneProperty WorkPlaneProperty { get; set; }
+
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}