Add graph application

StructureHelperLogics/Models/Graphs/IGraph.cs

@@ -0,0 +1,14 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperLogics.Models.CrossSections;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.Graphs
+{
+    public interface IGraph : ISaveable, ICloneable
+    {   
+    }
+}