Added models for presentation layer with data annotations

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

@@ -0,0 +1,21 @@
+using System.ComponentModel.DataAnnotations;
+using Domains;
+
+namespace ApplicationLayer.Services.VisaApplications.Models;
+
+/// Model of past visit for presentation layer
+public class PastVisitModel
+{
+    /// First day of past visit
+    [Required]
+    public DateTime StartDate { get; set; }
+
+    /// Last day of past visit
+    [Required]
+    public DateTime EndDate { get; set; }
+
+    /// Destination country of past visit
+    [Required]
+    [MaxLength(ConfigurationConstraints.CountryNameLength)]
+    public string DestinationCountry { get; set; } = null!;
+}