ClangCodeModel: Move memory usage widget to its own set of files

Change-Id: Iaeb449a12a11e46e8ce03556c699fff4ffceffc5
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/clangcodemodel/clangdmemoryusagewidget.h

@@ -0,0 +1,46 @@
+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#pragma once
+
+#include <QCoreApplication>
+#include <QWidget>
+
+namespace ClangCodeModel::Internal {
+class ClangdClient;
+
+class ClangdMemoryUsageWidget : public QWidget
+{
+    Q_DECLARE_TR_FUNCTIONS(ClangCodeModel)
+public:
+    explicit ClangdMemoryUsageWidget(ClangdClient *client);
+    ~ClangdMemoryUsageWidget();
+
+    class Private;
+    Private * const d;
+};
+
+} // namespace ClangCodeModel::Internal
+