GameCubePane: Use ConfigControls where applicable

Source/Core/DolphinQt/Config/ConfigControls/ConfigUserPath.h

@@ -0,0 +1,28 @@
+// Copyright 2025 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <QLineEdit>
+
+#include "Common/Config/ConfigInfo.h"
+
+#include "DolphinQt/Config/ConfigControls/ConfigText.h"
+
+class ConfigUserPath final : public ConfigText
+{
+  Q_OBJECT
+public:
+  ConfigUserPath(const unsigned int dir_index, const Config::Info<std::string>& setting);
+  ConfigUserPath(const unsigned int dir_index, const Config::Info<std::string>& setting,
+                 Config::Layer* layer);
+
+protected:
+  void OnConfigChanged() override;
+
+private:
+  void RefreshText();
+  void Update();
+
+  const unsigned int m_dir_index;
+};