Add project files.

ConstructorApp.DataAccessLayer/Concrete/DesignTime/ConstructorContextFactory.cs

@@ -0,0 +1,16 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace ConstructorApp.DataAccessLayer.Concrete
+{
+    public class ConstructorContextFactory : IDesignTimeDbContextFactory<ConstructorContext>
+    {
+        public ConstructorContext CreateDbContext(string[] args)
+        {
+            var optionsBuilder = new DbContextOptionsBuilder<ConstructorContext>();
+            optionsBuilder.UseSqlServer("Server=SABI\\SQLEXPRESS;Initial Catalog=CONSTRUCTOR;User ID=sa;Password=13579spP!!!!;Connect Timeout=30;Encrypt=False;TrustServerCertificate=True");
+
+            return new ConstructorContext(optionsBuilder.Options);
+        }
+    }
+}