qt6: missing QStateMachine

[krya-kryak]

I've noticed there is no QStateMachine binding for qt6, yet there is one generated for qt5.

Is there some undocumented underlying issue I failed to find that makes it hard to generate a binding for qt6, or is it something possible to tackle without c++ experience?

[krya-kryak]

To answer my own question: QStateMachine was moved from Qt Core to a an add-on module of its own:

QStateMachine was removed from Qt Core and will return in later Qt releases (most likely as part of the Qt SCXML module)

https://wiki.qt.io/New_Features_in_Qt_6.0

Qt5 migration guides states "module is generally speaking source compatible with the Qt5 version"
https://doc.qt.io/qt-6/qtstatemachine-changes-qt6.html

I've opened a PR to add both StateMachine and SCXML modules:
#301