Migrate to customizable cast receiver config

MediaBrowser.Model/System/SystemInfo.cs

@@ -2,6 +2,7 @@
 #pragma warning disable CS1591
 
 using System;
+using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using MediaBrowser.Model.Updates;
 
@@ -128,6 +129,11 @@ namespace MediaBrowser.Model.System
         /// <value>The transcode path.</value>
         public string TranscodingTempPath { get; set; }
 
+        /// <summary>
+        /// Gets or sets the list of cast receiver applications.
+        /// </summary>
+        public IReadOnlyList<CastReceiverApplication> CastReceiverApplications { get; set; }
+
         /// <summary>
         /// Gets or sets a value indicating whether this instance has update available.
         /// </summary>