[MacPorts] #56141: laszip: add long description

[MacPorts]

#56141: laszip: add long description
------------------------+--------------------
 Reporter:  ryandesign  |      Owner:  Veence
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  laszip
------------------------+--------------------
 {{{
 $ port lint laszip
 --->  Verifying Portfile for laszip
 Error: Missing required variable: long_description
 --->  1 errors and 0 warnings found.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56141>
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