[PostGIS] #5941: Support GDT_Float16 Pixel Type

[PostGIS]

#5941: Support GDT_Float16 Pixel Type
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 Reporter:  pramsey      |      Owner:  pramsey
     Type:  enhancement  |     Status:  new
 Priority:  high         |  Milestone:  PostGIS 3.6.0
Component:  postgis      |    Version:  master
 Keywords:               |
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 In GDAL 3.11+ there is a new pixel type, a 16 bit float. Supporting that
 pixel type will involve adding some new case statements throughout the
 raster code base, to handle this new width of float. See #5901 for example
 of changes from the addition of GDT_Int8.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5941>
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