Add curvature calculator DTOs

StructureHelperLogics/NdmCalculations/Cracking/IIsSectionCracked.cs

@@ -0,0 +1,13 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public interface IIsSectionCracked : ILogic
+    {
+        /// <summary>
+        /// Returns result of checking of cracks appearence
+        /// </summary>
+        /// <returns>True if Checked collectition contains cracked elements</returns>
+        bool IsSectionCracked();
+    }
+}