GPKG: Escape all column names in SQL. Fixes #5520

git-svn-id: https://svn.osgeo.org/gdal/trunk/gdal@27462 f0d54148-0727-0410-94bb-9a71ac55c965
GPKG: Support aspatial tables via the gdal_aspatial extension.

See geopackage_aspatial.html for the specification. Fixes #5521

git-svn-id: https://svn.osgeo.org/gdal/trunk/gdal@27463 f0d54148-0727-0410-94bb-9a71ac55c965