add StartIndex and ParentId to person search

MediaBrowser.Controller/Entities/InternalPeopleQuery.cs

@@ -21,6 +21,8 @@ namespace MediaBrowser.Controller.Entities
             ExcludePersonTypes = excludePersonTypes;
         }
 
+        public int? StartIndex { get; set; }
+
         /// <summary>
         /// Gets or sets the maximum number of items the query should return.
         /// </summary>
@@ -28,6 +30,8 @@ namespace MediaBrowser.Controller.Entities
 
         public Guid ItemId { get; set; }
 
+        public Guid? ParentId { get; set; }
+
         public IReadOnlyList<string> PersonTypes { get; }
 
         public IReadOnlyList<string> ExcludePersonTypes { get; }