[MacPorts] #56049: Split macports-contrib repository

[MacPorts]

#56049: Split macports-contrib repository
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 Reporter:  neverpanic   |      Owner:  mojca
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  contrib      |    Version:
 Keywords:               |       Port:
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 We should have split macports-contrib into smaller pieces during the move
 to GitHub, but didn't. Fix this now by splitting the repository and
 archiving the old macports-contrib repository.

 This will simplify using projects from macports-contrib in ports.

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Ticket URL: <https://trac.macports.org/ticket/56049>
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