Added option to ignore applet (gamepad connection window will not appear when it is disconnected) (#40)

This option is under the hacks category for a reason; use if you know what you're doing.

src/Ryujinx.UI.Common/Configuration/ConfigurationFileFormat.cs

@@ -163,6 +163,11 @@ namespace Ryujinx.UI.Common.Configuration
         /// </summary>
         public bool ShowConfirmExit { get; set; }
 
+        /// <summary>
+        /// ignore "Applet" dialog
+        /// </summary>
+        public bool IgnoreApplet { get; set; }
+
         /// <summary>
         /// Enables or disables save window size, position and state on close.
         /// </summary>