Add polygon to DTO convert strategy

DataAccess/DTOs/DTOEntities/Shapes/LinePolygonShapeDTO.cs

@@ -0,0 +1,53 @@
+using Newtonsoft.Json;
+using StructureHelperCommon.Models.Shapes;
+
+namespace DataAccess.DTOs
+{
+    public class LinePolygonShapeDTO : ILinePolygonShape
+    {
+        private readonly List<IVertex> _vertices = [];
+        [JsonProperty("Id")]
+        public Guid Id { get; }
+        [JsonProperty("Vertices")]
+        public IReadOnlyList<IVertex> Vertices => _vertices;
+        [JsonProperty("IsClosed")]
+        public bool IsClosed { get; set; }
+
+
+        public LinePolygonShapeDTO(Guid id)
+        {
+            Id = id;
+        }
+
+        public IVertex AddVertex(IVertex vertex)
+        {
+            _vertices.Add(vertex);
+            return vertex;
+        }
+
+        public IVertex AddVertexAfter(IVertex existing, IVertex vertex)
+        {
+            throw new NotImplementedException();
+        }
+
+        public IVertex AddVertexBefore(IVertex existing, IVertex vertex)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void Clear()
+        {
+            _vertices.Clear();
+        }
+
+        public IVertex InsertVertex(int index, IVertex vertex)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void RemoveVertex(IVertex vertex)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}