ref -->
https://doc.qt.io/qt-5/qtqml-documents-topic.html
https://doc.qt.io/qt-5/qtqml-index.html
https://qmlbook.github.io/
https://riptutorial.com/ebook/qt
https://doc.qt.io/qt-5/qtdatavisualization-index.html
https://doc.qt.io/qt-5/qtcharts-qmlchart-example.html
YouTube link -->
https://youtube.com/playlist?list=PLwyfE16Mkbx58rbWFAEk6Qm5PpDKqOtzp