Crack Calculator was added

StructureHelperCommon/Models/Calculators/FindParameterResult.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Calculators
+{
+    public class FindParameterResult : IResult
+    {
+        public bool IsValid { get; set; }
+        public string Description { get; set; }
+        public double Parameter { get; set; }
+    }
+}