Add qml support

[demiantres]

Add support for using the library from Qml, for instance (Font Awesome 5 branch):

`{
Q_OBJECT
Q_ENUMS(FontStyle)

public:
enum FontStyle {
/// solid icons
Stfas = style::stfas,
/// regular icons
Stfar = style::stfar,
#ifdef FONT_AWESOME_PRO
/// light icons
Stfal = style::stfal,
/// duotone icons
Stfad = style::stfad,
#endif
/// brands icons
Stfab = style::stfab
};

Q_INVOKABLE QString getFontName(FontStyle fontStyle = Stfas) const;
Q_INVOKABLE QString getIcon(const QString &iconName, FontStyle fontStyle = Stfas) const;`

[nuttyartist]

👍

[gamecreature]

More info about this: https://doc.qt.io/qt-6/qtqml-tutorials-extending-qml-example.html

[gamecreature]

In don't use QML myself.
If somebody can build in support for it and write a QML sample app, I can try to integrate it into the project.