Qt: Add missing file

src/platform/qt/Override.h

@@ -0,0 +1,24 @@
+/* Copyright (c) 2013-2016 Jeffrey Pfau
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef QGBA_OVERRIDE
+#define QGBA_OVERRIDE
+
+struct Configuration;
+struct mCore;
+
+namespace QGBA {
+
+class Override {
+public:
+	virtual ~Override() {}
+
+	virtual void apply(struct mCore*) = 0;
+	virtual void save(struct Configuration*) const = 0;
+};
+
+}
+
+#endif