*.owl (and *.owl.xml) extension should be recognised as application/owl+xml, and loaded

[vorburger]

$ ./enola -vvv docgen --load=file:"docs/models/example.org/pizza.owl" --output=file://"$PWD"/docs/models/
2024-06-25 14:51:49 INFO dev.enola.thing.io.Loader load Loading dev.enola.common.io.resource.FileResource{uri=file:///home/vorburger/git/github.com/enola-dev/enola/docs/models/example.org/pizza.owl & mediaType=application/octet-stream}...
2024-06-25 14:51:49 SEVERE dev.enola.thing.io.Loader load No Things in loaded: dev.enola.common.io.resource.FileResource{uri=file:///home/vorburger/git/github.com/enola-dev/enola/docs/models/example.org/pizza.owl & mediaType=application/octet-stream}