The strings (broadcast.id, stream.[id|name]) are stored as QString,
converted to const char * by QT_TO_UTF8 in OBSYoutubeActions, implicitly
converted back to QString because the OBSYoutubeActions::ok takes
const QString &, only to be converted back to const char * by QT_TO_UTF8
in OBSBasic_YouTube and immediately implicitly turned into
const std::strings, only to have .c_str() called on those to get their
const char * again which is needed for libobs. This is insane.
Let's just pass const std::string & and be happy.
