multiple geometry serialisations for dcat:bbox

[NielsHoffmann]

This is an issue for the GeoDCAT-AP 3.0.0 pilot

The XSLT seems to aim for a limited number of configuration parameters at the start of the file (deprecated yes/no for example) so that the rest of the transformation can be done accordingly.

For the dcat:bbox (and the locn:geometry property if deprecated=yes) this approach is not followed.
There are mutliple serialisations written to the output.

However, the GeoDCAT-AP proflie has a 0..1 cardinality defined for those proprerties. So the shacl validations fails on this implementation.

I think it would be good to settle on a preferred geometry serialization for the profile.