Add Qt libs and headers

paho-mqtt3as-proxy/Qt/include/QtCore/qfilesystemwatcher.h

@@ -0,0 +1,45 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QFILESYSTEMWATCHER_H
+#define QFILESYSTEMWATCHER_H
+
+#include <QtCore/qobject.h>
+
+QT_REQUIRE_CONFIG(filesystemwatcher);
+
+QT_BEGIN_NAMESPACE
+
+
+class QFileSystemWatcherPrivate;
+
+class Q_CORE_EXPORT QFileSystemWatcher : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QFileSystemWatcher)
+
+public:
+    QFileSystemWatcher(QObject *parent = nullptr);
+    QFileSystemWatcher(const QStringList &paths, QObject *parent = nullptr);
+    ~QFileSystemWatcher();
+
+    bool addPath(const QString &file);
+    QStringList addPaths(const QStringList &files);
+    bool removePath(const QString &file);
+    QStringList removePaths(const QStringList &files);
+
+    QStringList files() const;
+    QStringList directories() const;
+
+Q_SIGNALS:
+    void fileChanged(const QString &path, QPrivateSignal);
+    void directoryChanged(const QString &path, QPrivateSignal);
+
+private:
+    Q_PRIVATE_SLOT(d_func(), void _q_fileChanged(const QString &path, bool removed))
+    Q_PRIVATE_SLOT(d_func(), void _q_directoryChanged(const QString &path, bool removed))
+};
+
+QT_END_NAMESPACE
+
+#endif // QFILESYSTEMWATCHER_H