DolphinQt: Add the dumping bitrate setting to the graphics config

Fixes https://bugs.dolphin-emu.org/issues/10250

Source/Core/DolphinQt/Config/Graphics/GraphicsInteger.h

@@ -0,0 +1,24 @@
+// Copyright 2019 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QSpinBox>
+
+namespace Config
+{
+template <typename T>
+struct ConfigInfo;
+}
+
+class GraphicsInteger : public QSpinBox
+{
+  Q_OBJECT
+public:
+  GraphicsInteger(int minimum, int maximum, const Config::ConfigInfo<int>& setting, int step = 1);
+  void Update(int value);
+
+private:
+  const Config::ConfigInfo<int>& m_setting;
+};