[MacPorts] #62982: qt6: add port(s) for new Qt version 6

[MacPorts]

#62982: qt6: add port(s) for new Qt version 6
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  Reporter:  JDLH         |      Owner:  (none)
      Type:  request      |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.7.1
Resolution:               |   Keywords:
      Port:  qt6 qt5 qt4  |
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Comment (by jhoyt4):

 I'm not sure why this ticket didn't close - but qt6 was committed into
 master a couple days ago.

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Ticket URL: <https://trac.macports.org/ticket/62982#comment:5>
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