[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:
 Keywords:               |       Port:
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 There are still many ports that do not use the new syntax for the
 `maintainers` option that allows to specify both an email address and the
 GitHub username. We should do a mass-commit to add this to the ports that
 still do not have it, but we know the GitHub username for the currently
 listed email address.

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