Add beam shear classes

StructureHelperLogics/Models/Analyses/IBeamShearAnalysis.cs

@@ -0,0 +1,13 @@
+using StructureHelperCommon.Models.Analyses;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.Analyses
+{
+    public interface IBeamShearAnalysis : IAnalysis
+    {
+    }
+}