[PostGIS] #5861: pgtopo_import: add switch to request pre-dropping an existing topology

[PostGIS]

#5861: pgtopo_import: add switch to request pre-dropping an existing topology
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 Reporter:  strk      |      Owner:  strk
     Type:  defect    |     Status:  new
 Priority:  medium    |  Milestone:  PostGIS Fund Me
Component:  topology  |    Version:  master
 Keywords:            |
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 Like shp2pgsql we could add a -d for "drop" switch that removes an
 existing topology with the same name as the requested one.

 The -d idea comes from shp2pgsql - see
 https://postgis.net/docs/using_postgis_dbmanagement.html#load-data-sql
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5861>
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