[MacPorts] #44719: Add port cantera

[MacPorts]

#44719: Add port cantera
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  Reporter:  macports@…  |      Owner:  macports-tickets@…
      Type:  submission  |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.1
Resolution:              |   Keywords:
      Port:  cantera     |
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Comment (by ryandesign@…):

 You don't need to (and should not) `gzip` manpages manually; MacPorts does
 so for you automatically.

 You may include the github portgroup just in the suggested cantera-devel
 subport, since it doesn't seem needed in the main stable-versioned port.
 However, such a cantera-devel subport must fetch from a specifi commit,
 and the version must be set correspondingly; fetching from master is not
 allowed. See RepeatableBuilds.

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Ticket URL: <https://trac.macports.org/ticket/44719#comment:10>
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