[Interest] Support for Qt 5 & Qt 6 in QML app

[Александр Иваш]

I need to migrate a Qt 5 application with QML ui to Qt 6 without
losing Qt 5 support. What is the best approach here? Version-specific
resources? File selectors (by the way is it even possible to select
QML files based on the Qt version?) I mean it is clear that
platform-specific code/imports needs to be wrapped into
platform-specific components, but what is the best way to select the
right component?