Add trace crack result

StructureHelperLogics/NdmCalculations/Cracking/IRebarCrackResult.cs

@@ -0,0 +1,24 @@
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperLogics.NdmCalculations.Primitives;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    /// <summary>
+    /// Result of calculation of crack for specific result
+    /// </summary>
+    public interface IRebarCrackResult : IResult
+    {
+        /// <summary>
+        /// Specific rebar primitive
+        /// </summary>
+        IRebarNdmPrimitive? RebarPrimitive { get; set; }
+        /// <summary>
+        /// Result of calculation of crack for long term
+        /// </summary>
+        CrackWidthRebarTupleResult? LongTermResult { get; set; }
+        /// <summary>
+        /// Result of calculation of crack for short term
+        /// </summary>
+        CrackWidthRebarTupleResult? ShortTermResult { get; set; }
+    }
+}