VCST-2883: add SelectedAddressId property to Contact (#267)

Author: basilkot

src/VirtoCommerce.CustomerModule.Core/Model/Contact.cs

@@ -27,6 +27,7 @@ public Contact()
         public IList<string> AssociatedOrganizations { get; set; }
         public string DefaultOrganizationId { get; set; }
         public string CurrentOrganizationId { get; set; }
+        public string SelectedAddressId { get; set; }
 
         public string TaxPayerId { get; set; }
         public string PreferredDelivery { get; set; }