Fully replace and archive this repository

[nichtich]

Requires to check and replace all references to kos-registry.

[nichtich]

• Remove reference to kos-registry cocoda-services#8
• Remove kos-registry cocoda-mappings#41
• https://github.com/gbv/bartoc.org/blob/a852473ce6d5e4e0fcd391fb462cc926b646c902/data/registries.ndjson
• https://github.com/gbv/coli-conc.gbv.de/blob/8d1ef66729c5a478ba6b632c9c7b64dbab2cd0e9/en/terminologies.md

[stefandesu]

• https://github.com/gbv/bartoc.org/blob/a852473ce6d5e4e0fcd391fb462cc926b646c902/data/registries.ndjson

Do you only mean the text "It is a subset of kos-registry, the set of all systems known to the project"? Otherwise I can't see a reference to kos-registry there.

• https://github.com/gbv/coli-conc.gbv.de/blob/8d1ef66729c5a478ba6b632c9c7b64dbab2cd0e9/en/terminologies.md

Since we're already using data from BARTOC, we only need to adjust the title and terminology of that page, right?