[oe] [meta-qt5] Commercial License

[Sébastien Taylor]

I am looking to update the qt5 build to build the commercial version (as opposed to the open source) as well as adding the QtCharts and Visualization modules which are part of the commercial release.

I was hoping for some feedback as to whether this has already been looked at and opinions on how to best handle toggling the license in the configuration in a way that can be submitted back into meta-qt5.