Make DolphinWX/ mostly IWYU clean.

Source/Core/DolphinWX/ARCodeAddEdit.h

@@ -4,10 +4,19 @@
 
 #pragma once
 
-#include <wx/spinctrl.h>
-#include <wx/wx.h>
+#include <wx/dialog.h>
+#include <wx/event.h>
+#include <wx/gdicmn.h>
+#include <wx/string.h>
+#include <wx/translation.h>
+#include <wx/windowid.h>
 
-#include "DolphinWX/ISOProperties.h"
+class wxSpinButton;
+class wxSpinEvent;
+class wxTextCtrl;
+class wxWindow;
+
+namespace ActionReplay { struct ARCode; }
 
 class CARCodeAddEdit : public wxDialog
 {