Add trace crack result

StructureHelperLogics/NdmCalculations/Cracking/ITupleCrackResult.cs

@@ -0,0 +1,31 @@
+using StructureHelperCommon.Models.Calculators;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    /// <summary>
+    /// Result of crack calculation for specific force tuple
+    /// </summary>
+    public interface ITupleCrackResult : IResult 
+    {
+        /// <summary>
+        /// Reference to input data for calculation
+        /// </summary>
+        TupleCrackInputData? InputData { get; set; }
+        /// <summary>
+        /// True if cross-section has been cracked under specific force combination
+        /// </summary>
+        bool IsCracked { get; set; }
+        /// <summary>
+        /// Result of calculation of crack width for long term force combination
+        /// </summary>
+        CrackWidthRebarTupleResult? LongTermResult { get; set; }
+        /// <summary>
+        /// Collection of resuls for specific rebars
+        /// </summary>
+        List<IRebarCrackResult>? RebarResults { get; }
+        /// <summary>
+        /// Result of calculation of crack width for short term force combination
+        /// </summary>
+        CrackWidthRebarTupleResult? ShortTermResult { get; set; }
+    }
+}