Added authentication and authorization, updated dependency injections, removed hard-coded connection string

SchengenVisaApi/ApplicationLayer/DataAccessingServices/VisaApplications/Models/PastVisitModel.cs

@@ -0,0 +1,14 @@
+namespace ApplicationLayer.DataAccessingServices.VisaApplications.Models
+{
+    public class PastVisitModel
+    {
+        /// First day of <see cref="PastVisitModel"/>
+        public DateTime StartDate { get; set; }
+
+        /// Last day of <see cref="PastVisitModel"/>
+        public DateTime EndDate { get; set; }
+
+        /// Identifier of destination country of <see cref="PastVisitModel"/>
+        public Guid DestinationCountryId { get; set; }
+    }
+}