qt: Add a configuration tab for Graphics and move relevant fields.

src/citra_qt/configure_graphics.h

@@ -0,0 +1,29 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <QWidget>
+
+namespace Ui {
+class ConfigureGraphics;
+}
+
+class ConfigureGraphics : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit ConfigureGraphics(QWidget *parent = nullptr);
+    ~ConfigureGraphics();
+
+    void applyConfiguration();
+
+private:
+    void setConfiguration();
+
+private:
+    std::unique_ptr<Ui::ConfigureGraphics> ui;
+};