Add converting strategies for beam shear actions

DataAccess/DTOs/DTOEntities/ConcentratedForceDTO.cs

@@ -1,7 +1,7 @@
 using Newtonsoft.Json;
 using StructureHelperCommon.Models.Forces;
 
-namespace DataAccess.DTOs.DTOEntities
+namespace DataAccess.DTOs
 {
     public class ConcentratedForceDTO : IConcentratedForce
     {
@@ -10,7 +10,7 @@ namespace DataAccess.DTOs.DTOEntities
         [JsonProperty("Name")]
         public string Name { get; set; } = string.Empty;
         [JsonProperty("ForceValue")]
-        public IForceTuple ForceValue { get; set; }
+        public IForceTuple ForceValue { get; set; } = new ForceTupleDTO(Guid.Empty);
         [JsonProperty("ForceCoordinate")]
         public double ForceCoordinate { get; set; }
         [JsonProperty("RelativeLoadLevel")]
@@ -18,12 +18,16 @@ namespace DataAccess.DTOs.DTOEntities
         [JsonProperty("LoadRatio")]
         public double LoadRatio { get; set; }
         [JsonProperty("CombinationProperty")]
-        public IFactoredCombinationProperty CombinationProperty { get; set; }
+        public IFactoredCombinationProperty CombinationProperty { get; set; } = new FactoredCombinationPropertyDTO(Guid.Empty);
 
+        public ConcentratedForceDTO(Guid id)
+        {
+            Id = id;
+        }
 
         public object Clone()
         {
-            throw new NotImplementedException();
+            return this;
         }
     }
 }