feat: Add settings page for providers (#353)

sources/providersConfig/ProviderSecretsStore.hpp

@@ -0,0 +1,30 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QObject>
+#include <QString>
+
+namespace QodeAssist::Providers {
+
+class ProviderSecretsStore : public QObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY_MOVE(ProviderSecretsStore)
+public:
+    explicit ProviderSecretsStore(QObject *parent = nullptr);
+    ~ProviderSecretsStore() override;
+
+    [[nodiscard]] QString readKeySync(const QString &ref) const;
+
+    void writeKey(const QString &ref, const QString &value);
+    void eraseKey(const QString &ref);
+
+    [[nodiscard]] bool hasKey(const QString &ref) const;
+
+signals:
+    void keyChanged(const QString &ref);
+};
+
+} // namespace QodeAssist::Providers