[Development] Requesting a wip/qt6 branch for QtSerialBus

[André Hartmann]

Hi all,

I allready have some ideas for QCanBusDevice which requires 
binary-incompatible changes and therefore needs to be done for Qt6 [1].

To be able to already start the work, I'm hereby requesting a wip branch 
that could be merged when the "real" Qt6 development begins.

The advantage would be, that others could already pick up that changes 
and test them, which hopefully will improve the code quality.

Regards,
André

[1] https://bugreports.qt.io/browse/QTBUG-64145