Templates was added

StructureHelperLogics/Models/Templates/RCs/IRectangleBeamTemplate.cs

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+using StructureHelperCommon.Models.Shapes;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.Models.Templates.RCs
+{
+    public interface IRectangleBeamTemplate
+    {
+        IShape Shape { get; }
+        double CoverGap { get; set; }
+        double TopDiameter { get; set; }
+        double BottomDiameter { get; set; }
+        int WidthCount { get; set; }
+        int HeightCount { get; set; }
+    }
+}