Added models for presentation layer with data annotations

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

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+using Domains;
+
+namespace ApplicationLayer.Services.VisaApplications.Models;
+
+/// Model of permission to destination country for presentation layer
+public class PermissionToDestCountryModel
+{
+    /// Date when permission to destination country expires
+    [Required]
+    public DateTime ExpirationDate { get; set; }
+
+    /// Issuing authority
+    [Required]
+    [MaxLength(ConfigurationConstraints.IssuerNameLength)]
+    public string Issuer { get; set; } = null!;
+}