Qt 6 support

[Lunarequest]

I was wondering if there were any plans to support Qt 6, if so any idea when we can expect the crate to support it?

[GuyResh]

FWIW, I'm trying to port Fu510nTrader from Python/PyQt6 to Rust and was disappointed to only find Qt5 supported in Rust so I'm taking a crack at getting rust-qt/ritual working with Qt 6.6.2. I've gotten fairly far down the GTK4 path (which has had it's own set of issues) but generating the chart UI is a "non-trivial task" so figured it worth seeing if I can get my existing code ported first.