Personmodel handled as dbtabel and as file

TrackerLibrary/Models/PersonModel.cs

@@ -6,6 +6,10 @@ namespace TrackerLibrary.Models
 {
     public  class PersonModel
     {
+        /// <summary>
+        /// The unique identifier for the prize
+        /// </summary>
+        public int Id { get; set; }
         public string FirstName { get; set; }
         public string LastName { get; set; }
         public string EmailAddress { get; set; }