IOS/USB: Emulate Wii Speak (OpenAL)

Credits to @degasus and shuffle2 (godisgovernment):
https://github.com/degasus/dolphin/tree/wiispeak

Source/Core/DolphinQt/EmulatedUSB/WiiSpeakWindow.h

@@ -0,0 +1,27 @@
+// Copyright 2025 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QWidget>
+
+#include "Core/Core.h"
+
+class QCheckBox;
+class QComboBox;
+
+class WiiSpeakWindow : public QWidget
+{
+  Q_OBJECT
+public:
+  explicit WiiSpeakWindow(QWidget* parent = nullptr);
+  ~WiiSpeakWindow() override;
+
+private:
+  void CreateMainWindow();
+  void OnEmulationStateChanged(Core::State state);
+  void EmulateWiiSpeak(bool emulate);
+
+  QCheckBox* m_checkbox;
+  QComboBox* m_combobox_microphones;
+};