Cppcheck: Add ability to manually run cppcheck

Run cppcheck on selected files from current project via "Analyze"->"Cppcheck...."
Show results in a separate view in the same manner as ClangTools plugin.

Fixes: QTCREATORBUG-21673
Change-Id: Ibcaf4057a387a990f1da59025f15ba58f996953f
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/cppcheck/cppcheckdiagnosticview.h

@@ -0,0 +1,49 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 Sergey Morozov
+** 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 <debugger/analyzer/detailederrorview.h>
+
+namespace Cppcheck {
+namespace Internal {
+
+class DiagnosticView : public Debugger::DetailedErrorView
+{
+    Q_OBJECT
+public:
+    explicit DiagnosticView(QWidget *parent = nullptr);
+    ~DiagnosticView() override;
+
+    void goNext() override;
+    void goBack() override;
+
+private:
+    void openEditorForCurrentIndex();
+    void mouseDoubleClickEvent(QMouseEvent *event) override;
+};
+
+} // namespace Internal
+} // namespace Cppcheck