Qt: Add Controller LED options (where supported)

src/duckstation-qt/colorpickerbutton.h

@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: 2023 Connor McLaughlin <stenzek@gmail.com>
+// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
+
+#pragma once
+#include "common/types.h"
+#include <QtWidgets/QPushButton>
+
+class ColorPickerButton : public QPushButton
+{
+  Q_OBJECT
+
+public:
+  ColorPickerButton(QWidget* parent);
+
+Q_SIGNALS:
+  void colorChanged(quint32 new_color);
+
+public Q_SLOTS:
+  quint32 color();
+  void setColor(quint32 rgb);
+
+private Q_SLOTS:
+  void onClicked();
+
+private:
+  void updateBackgroundColor();
+
+  u32 m_color = 0;
+};