[Pg] Add implementation of geography type for PostGIS extension #3021
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For now, as mentioned here, Drizzle ORM only has basic support for the PostGIS extension, with only the
geometry
column type available. PostGIS also offers ageography
column type, which is often more suitable for storing real-world location coordinates because it uses the Earth's spherical representation for calculations.This is a first attempt to implement the
geography
type, based on the current implementation ofgeometry
. Both types work similarly, with the following differences:srid
parameter has been removed, as thegeography
type only works with SRID 4326.xy
mode has been renamed tojson
, andx
andy
have been replaced withlon
andlat
, which makes more sense for geographic coordinates.