[MacPorts] #44404: Add port libstreamlog

[MacPorts]

#44404: Add port libstreamlog
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 Reporter:  gtolemans@…  |      Owner:  macports-tickets@…
     Type:  submission   |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.3.1
 Keywords:               |       Port:  libstreamlog
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 Add port libstreamlog

 Streamlog is a simple and lightweight library that maintains an array of
 user-defined C++ standard output streams. Every time you write to the log,
 it automatically writes to all of the added streams.

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Ticket URL: <https://trac.macports.org/ticket/44404>
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