* Added Authentication

OrdersManagement/Models/LoginModel.cs

@@ -0,0 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace OrdersManagement.Models;
+
+public class LoginModel
+{
+    [Required(ErrorMessage = "Login jest wymagany")]
+    public string Login { get; set; }
+
+    [Required(ErrorMessage = "Hasło jest wymagane")]
+    public string Password { get; set; }
+}