create namespace for monkey patching existing vocabs

[elf-pavlik]

It seems that currently solid team promotes practice of dropping additional terms to namespaces under control of someone else. I think that creating dedicated namespace for such terms would provide a cleaner way of doing it.

http://www.w3.org/2006/vcard/ns does not include AddressBook or hasIndividual (as used in solid-contacts)

Such terms should have IRIs and definitions in namespace controlled by solid team, if they get adopted by vocab which they patch, combination of owl:equivalentProperty, owl:equivalentClass and schema:supersededBy can help with deprecating term from solid monkey patches.

[akuckartz]

👍