Added is running as service to IServerApplicationHost

MediaBrowser.Controller/IServerApplicationHost.cs

@@ -20,6 +20,12 @@ namespace MediaBrowser.Controller
         /// <value>The name of the web application.</value>
         string WebApplicationName { get; }
 
+        /// <summary>
+        /// Gets a value indicating whether this instance is running as service.
+        /// </summary>
+        /// <value><c>true</c> if this instance is running as service; otherwise, <c>false</c>.</value>
+        bool IsRunningAsService { get; }
+
         /// <summary>
         /// Gets a value indicating whether [supports automatic run at startup].
         /// </summary>