Implement identity verification feature with image upload and token management

FoodsharingSiegen.Contracts/Entity/Prospect.cs

@@ -63,6 +63,16 @@ namespace FoodsharingSiegen.Contracts.Entity
         /// </summary>
         public bool Warning { get; set; }
 
+        /// <summary>
+        ///     Gets or sets a token string used to securely authorize upload logic.
+        /// </summary>
+        public Guid? VerificationToken { get; set; }
+
+        /// <summary>
+        ///     Gets or sets uploaded identity verification images.
+        /// </summary>
+        public ICollection<ProspectImage>? Images { get; set; }
+
         #endregion
     }
 }