Add logic for import of combination from xls files

StructureHelperCommon/Models/Forces/Logics/ColumnPropertyCloningStrategy.cs

@@ -0,0 +1,37 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Services;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Forces
+{
+    public class ColumnPropertyCloningStrategy : ICloneStrategy<IColumnProperty>
+    {
+        private IUpdateStrategy<IColumnProperty> updateStrategy;
+
+        public ColumnPropertyCloningStrategy(IUpdateStrategy<IColumnProperty> updateStrategy)
+        {
+            this.updateStrategy = updateStrategy;
+        }
+
+        public ColumnPropertyCloningStrategy()
+        {
+            
+        }
+
+        public IColumnProperty GetClone(IColumnProperty sourceObject)
+        {
+            CheckObject.IsNull(sourceObject);
+            if (updateStrategy is null)
+            {
+                updateStrategy = new ColumnPropertyUpdateStrategy();
+            }
+            ColumnProperty newItem = new(sourceObject.Name);
+            updateStrategy.Update(newItem, sourceObject);
+            return newItem;
+        }
+    }
+}