Add project files.

OemanTrader.EntityFramework/OemanTraderDbContextFactory.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace OemanTrader.EntityFramework
+{
+    public class OemanTraderDbContextFactory : IDesignTimeDbContextFactory<OemanTraderDbContext>
+    {
+        public OemanTraderDbContext CreateDbContext(string[] args = null)
+        {
+            var options = new DbContextOptionsBuilder<OemanTraderDbContext>();
+            options.UseSqlServer("Server=oemansv7win;Initial Catalog=OemanTraderDB;Persist Security Info=True;User ID=sa;Password=SAOemansv7SA;");
+            return new OemanTraderDbContext(options.Options);
+        }
+    }
+}