Copilot: Add LSP plugin for Copilot

Fixes: QTCREATORBUG-27771
Change-Id: I1249b9a4492427208a70b3e21bf20ac668fc3c50
Reviewed-by: hjk <hjk@qt.io>

src/plugins/copilot/copilotoptionspage.cpp

@@ -0,0 +1,46 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
+
+#include "copilotoptionspage.h"
+
+#include "copilotoptionspagewidget.h"
+#include "copilotsettings.h"
+
+#include <coreplugin/icore.h>
+
+namespace Copilot {
+
+CopilotOptionsPage::CopilotOptionsPage()
+{
+    setId("Copilot.General");
+    setDisplayName("Copilot");
+    setCategory("ZY.Copilot");
+    setDisplayCategory("Copilot");
+
+    setCategoryIconPath(":/languageclient/images/settingscategory_languageclient.png");
+}
+
+CopilotOptionsPage::~CopilotOptionsPage() {}
+
+void CopilotOptionsPage::init() {}
+
+QWidget *CopilotOptionsPage::widget()
+{
+    return new CopilotOptionsPageWidget();
+}
+
+void CopilotOptionsPage::apply()
+{
+    CopilotSettings::instance().apply();
+    CopilotSettings::instance().writeSettings(Core::ICore::settings());
+}
+
+void CopilotOptionsPage::finish() {}
+
+CopilotOptionsPage &CopilotOptionsPage::instance()
+{
+    static CopilotOptionsPage settingsPage;
+    return settingsPage;
+}
+
+} // namespace Copilot