Add beam shear classes

StructureHelperLogics/Models/BeamShears/IStirrup.cs

@@ -0,0 +1,17 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.BeamShears
+{
+    /// <summary>
+    /// Implement properties of stirrups
+    /// </summary>
+    public interface IStirrup : ISaveable, ICloneable
+    {
+        string Name { get; set; }
+    }
+}