[tor-bugs] #16612 [Onionoo]: Support parsing of .xz compressed tarballs.

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#16612: Support parsing of .xz compressed tarballs.
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 Reporter:  leeroy       |          Owner:
     Type:  enhancement  |         Status:  new
 Priority:  minor        |      Milestone:
Component:  Onionoo      |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
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 Adding this as an Onionoo component because that's who handles importing
 dependencies for metrics-lib.

 This ticket adds support for .xz tarball archives during import.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16612>
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