Add project files.

StockDal.Interface/IStockPersonConnect.cs

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+using DataDomain;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StockDAL.Interface
+{
+    public interface IStockPersonConnect
+    {
+        IEnumerable<PersonStock> GetAllConnectedStocks();
+        IEnumerable<PersonStock> GetAllConnectionsByPersId(int personId);
+        void RemoveConnectedShare(PersonStock personStock);
+        PersonStock SavePersonStockConnection(PersonStock personStock);
+    }
+}