Add new strrrups DTOs

DataAccess/DTOs/DTOEntities/BeamShears/StirrupGroupDTO.cs

@@ -0,0 +1,27 @@
+using Newtonsoft.Json;
+using StructureHelperLogics.Models.BeamShears;
+
+namespace DataAccess.DTOs
+{
+    public class StirrupGroupDTO : IStirrupGroup
+    {
+        [JsonProperty("Id")]
+        public Guid Id { get; }
+        [JsonProperty("Name")]
+        public string? Name { get; set; }
+        [JsonProperty("CompressedGap")]
+        public double CompressedGap { get; set; }
+        [JsonProperty("Stirrups")]
+        public List<IStirrup> Stirrups { get; } = new();
+        public StirrupGroupDTO(Guid id)
+        {
+            Id = id;
+        }
+
+
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}