[MacPorts] #56050: Add GitHub usernames to maintainer option in all ports

[MacPorts]

#56050: Add GitHub usernames to maintainer option in all ports
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  Reporter:  raimue       |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:               |
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Comment (by ryandesign):

 I would recommend that we not do a mass commit just yet; so many ports
 would be affected that it would tie up the buildbot for days. I wouldn't
 want to cancel those buildbot builds, since the ports in question likely
 haven't been touched for some time and may need to be built on some of the
 builders, but I would rather tackle smaller batches of ports at a time. I
 had intended, over time, to submit pull requests for individual
 maintainers to approve.

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Ticket URL: <https://trac.macports.org/ticket/56050#comment:1>
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