Add beam shear classes

StructureHelperLogics/Models/BeamShears/IBeamShearRepository.cs

@@ -0,0 +1,16 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Forces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.BeamShears
+{
+    public interface IBeamShearRepository : ISaveable, IHasBeamShearActions, IHasCalculators, ICloneable
+    {
+        
+    }
+}