Port QMessageAuthenticationCode to QByteArrayView

See epic for rationale.

resultView() is already done.

Both the setData() calls and they key should be passed by QByteArrayView.

Acceptance criteria:

• the following API parts are ported to QByteArrayView:
  • ctor (key)
  • setKey()
  • addData()
  • hash() (key and message)

We need to decide how to deal with the QBA->QBAV SiCs:

• accept, like in QCryptographicHash?
• make QBA Q_WEAK_OVERLOAD?
• make QBAV accept anything that implicitly converts to QBA, QAnyStringView-like?