Add value diagram windows and view models

StructureHelperLogics/NdmCalculations/Analyses/ValueDiagrams/IValueDiagramEntity.cs

@@ -0,0 +1,11 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+
+namespace StructureHelperLogics.NdmCalculations.Analyses.ValueDiagrams
+{
+    public interface IValueDiagramEntity : ISaveable, ICloneable
+    {
+        string Name { get; set; }
+        bool IsTaken { get; set; }
+        IValueDiagram ValueDigram { get; set; }
+    }
+}