am/gui: Implement Wake-up message (#1750)

* am/gui: Implement Wake-up message.

This implement the ability to send a Wake-up (Resume) message to the guest.
Sometime games needs to Sleep and Wake-up the switch to unlock some ingame features.

* Address gdkchan feedback

Ryujinx/Ui/MainWindow.cs

@@ -1205,6 +1205,11 @@ namespace Ryujinx.Ui
             settingsWin.Show();
         }
 
+        private void Simulate_WakeUp_Message_Pressed(object sender, EventArgs args)
+        {
+            _emulationContext.System.SimulateWakeUpMessage();
+        }
+
         private void Update_Pressed(object sender, EventArgs args)
         {
             if (Updater.CanUpdate(true))