[MacPorts] #59218: QLMarkdown and QLColorcode fail on Catalina 10.15

[MacPorts]

#59218: QLMarkdown and QLColorcode fail on Catalina 10.15
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  Reporter:  breiter                 |      Owner:  (none)
      Type:  defect                  |     Status:  new
  Priority:  Normal                  |  Milestone:
 Component:  ports                   |    Version:
Resolution:                          |   Keywords:  catalina
      Port:  QLMarkdown QLColorCode  |
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Comment (by breiter):

 I suspect that QuickLook plugins need to be notarized or they will not be
 loaded by `quicklookd`.

 https://developer.apple.com/documentation/xcode/notarizing_your_app_before_distribution?language=objc
 https://developer.apple.com/documentation/xcode/notarizing_your_app_before_distribution/customizing_the_notarization_workflow?language=objc#3087734

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Ticket URL: <https://trac.macports.org/ticket/59218#comment:5>
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