Add EllipsePrimitive to DTO Converter

StructureHelperCommon/Models/Shapes/RectangleShape.cs

@@ -1,13 +1,25 @@
-namespace StructureHelperCommon.Models.Shapes
+using System;
+
+namespace StructureHelperCommon.Models.Shapes
 {
     /// <inheritdoc />
     public class RectangleShape : IRectangleShape
     {
+        public Guid Id { get; }
         /// <inheritdoc />
         public double Width { get; set; }
         /// <inheritdoc />
         public double Height { get; set; }
         /// <inheritdoc />
         public double Angle { get; set; }
+
+        public RectangleShape(Guid id)
+        {
+            Id = id;
+        }
+        public RectangleShape() : this (Guid.NewGuid())
+        {
+            
+        }
     }
 }