refactor(generator): migrate typesystem parser to QXmlStreamReader#322

usiems merged 2 commits intoMeVisLab:mainMeVisLab/pythonqt:mainfrom

jcfr:migrate-generator-to-qxmlstreamreaderjcfr/MeVisLab-pythonqt:migrate-generator-to-qxmlstreamreaderCopy head branch name to clipboard