Switch kanagram master to kf6/qt6
In order to move forward and merge another MR that updates the gui with some Qt6/KF6 qml adaptations I'd like Kanagram's master branch to be KF6/Qt6 based.
In order to move forward and merge another MR that updates the gui with some Qt6/KF6 qml adaptations I'd like Kanagram's master branch to be KF6/Qt6 based.