Help: Mention that Qt6 is supported by AUTOGEN
AUTORCC, AUTOMOC, AUTOUIC documentation didn't mention Qt 6 so far: "Currently Qt4 and Qt5 are supported." Mention Qt6 too.
AUTORCC, AUTOMOC, AUTOUIC documentation didn't mention Qt 6 so far: "Currently Qt4 and Qt5 are supported." Mention Qt6 too.