Add playlist-sync and group-wait to SyncPlay

MediaBrowser.Model/SyncPlay/QueueItem.cs

@@ -0,0 +1,24 @@
+#nullable disable
+
+using System;
+
+namespace MediaBrowser.Model.SyncPlay
+{
+    /// <summary>
+    /// Class QueueItem.
+    /// </summary>
+    public class QueueItem
+    {
+        /// <summary>
+        /// Gets or sets the item id.
+        /// </summary>
+        /// <value>The item id.</value>
+        public Guid ItemId { get; set; }
+
+        /// <summary>
+        /// Gets or sets the playlist id of the item.
+        /// </summary>
+        /// <value>The playlist id of the item.</value>
+        public string PlaylistItemId { get; set; }
+    }
+}