Add QtPurchasing module as an example under Qt demos

QtPurchasing module is deprecated in Qt6. However, the purchasing
code is moved as example/demo under qtdoc to demonstrate the use of
in-app purchases in Android/iOS.

The demo is under demos\hangman.

Few fixes done to the original code:
* Ported the code to Qt 6.
* Removed reinterpret_casts and QQmlListPropertys.
* Fixed few QML warnings.
* Added documentation
	* Fixed documentation
* Added CMake port
	* Fixed Cmake for iOS
* Modified Fonts in qml file
* project name changed from qthangmanpurchasing to hangman

Task-number: QTBUG-84776
Pick-to: 6.2
Change-Id: I86051b29d54cfb4a48b310ebc8d538c806fbf8da
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Nicholas Bennett <nicholas.bennett@qt.io>
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

1 files changed, 67 insertions, 0 deletions

diff --git a/examples/demos/hangman/main.cpp b/examples/demos/hangman/main.cpp
new file mode 100644
index 000000000..058e69fd0
--- /dev/null
+++ b/examples/demos/hangman/main.cpp
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtQuick>
+#include <QtGui/QGuiApplication>
+#include <QtQml/QQmlApplicationEngine>
+
+#include "hangmangame.h"
+#include "purchasing/qmltypes/inappstoreqmltype.h"
+#include "purchasing/inapp/inappproduct.h"
+#include "purchasing/inapp/inapptransaction.h"
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+
+    QQmlApplicationEngine engine(QUrl("qrc:/main.qml"));
+
+    return app.exec();
+}