Add EllipsePrimitive to DTO Converter

StructureHelperCommon/Models/Shapes/CircleShape.cs

@@ -8,6 +8,17 @@ namespace StructureHelperCommon.Models.Shapes
 {
     public class CircleShape : ICircleShape
     {
+        public Guid Id { get; }
         public double Diameter { get; set; }
+        public CircleShape(Guid id)
+        {
+            Id = id;
+        }
+
+        public CircleShape() : this (Guid.NewGuid())
+        {
+            
+        }
+
     }
 }