Feature/persistent watch data (#14262)

src/Jellyfin.Database/Jellyfin.Database.Implementations/Entities/UserData.cs

@@ -68,6 +68,11 @@ public class UserData
     /// <value><c>null</c> if [likes] contains no value, <c>true</c> if [likes]; otherwise, <c>false</c>.</value>
     public bool? Likes { get; set; }
 
+    /// <summary>
+    /// Gets or Sets the date the referenced <see cref="Item"/> has been deleted.
+    /// </summary>
+    public DateTimeOffset? RetentionDate { get; set; }
+
     /// <summary>
     /// Gets or sets the key.
     /// </summary>