[MacPorts] #59179: py-tensorflow*: copy version 1 into new version 1 ports

[MacPorts]

#59179: py-tensorflow*: copy version 1 into new version 1 ports
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  Reporter:  blair          |      Owner:  blair
      Type:  enhancement    |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  py-tensorflow  |
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Comment (by cjones051073):

 B.t.w. Can I request when you add the new ports please do not implement
 them as new stand alone portfiles. Instead please use the same model as in
 the bazel portfile, where each of the older versioned builds are
 implemented as sub ports. In this way you can avoid a lot of code
 duplication, as the build for tensorflow 1 and 2 is pretty much the same.

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Ticket URL: <https://trac.macports.org/ticket/59179#comment:2>
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