feat: Add settings page for providers (#353)

settings/SectionBox.hpp

@@ -0,0 +1,26 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QWidget>
+
+class QLabel;
+class QVBoxLayout;
+
+namespace QodeAssist::Settings {
+
+class SectionBox : public QWidget
+{
+public:
+    explicit SectionBox(const QString &title, QWidget *parent = nullptr);
+
+    QVBoxLayout *bodyLayout() const { return m_bodyLayout; }
+
+private:
+    QLabel *m_title = nullptr;
+    QWidget *m_body = nullptr;
+    QVBoxLayout *m_bodyLayout = nullptr;
+};
+
+} // namespace QodeAssist::Settings