Enable Material style Dense variant by other means than config file or env variable

The Dense variant of the Material Style cannot be set while setting the style at compile time. By declaring import QtQuick.Controls.Material, only the mobile-oriented Normal variant is available, leaving desktop in limbo.

It should be possible to set the variant in the same way we set the theme:
Material.variant=Material.Dense

If child property inheritance is too troubling, consider supporting this feature anyway with the limitation that it must be set in the root QML object.