[MacPorts] #69342: shaderc: new port

[MacPorts]

#69342: shaderc: new port
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  Reporter:  DanielO     |      Owner:  (none)
      Type:  submission  |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  shaderc     |
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Changes (by DanielO):

 * Attachment "shaderc-newport2.diff" added.

 Updated port diff.

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Ticket URL: <https://trac.macports.org/ticket/69342>
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