Add curvature calculator DTOs

StructureHelperLogics/NdmCalculations/Analyses/Curvatures/ICurvatureTermCalculator.cs

@@ -0,0 +1,12 @@
+using StructureHelperCommon.Models.Calculators;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StructureHelperLogics.NdmCalculations.Analyses.Curvatures
+{
+    public interface ICurvatureTermCalculator : ILogicCalculator
+    {
+        ICurvatureTermCalculatorInputData InputData { get; set; }
+    }
+}