Migrate to qgis QT6

[yjdyamv]

Hello, for qgis next version (4.0) is migrating to qt6 (now it is testing), extensions need to migrate too. Thanks!

[semiautomaticgit]

Hello @yjdyamv , thank you.
I'm working on it, I'll try to release the new version in time for QGIS 4.