AT5-768 PI11 CAR artefact migration
Migrated artefacts to CAR (artefact.skao.int) from nexus.engageska-portugal.pt repository; all charts, images and packages are pushed to the CAR, and most* artefacts are pulled from the CAR.
*Artefacts that have not at this time been fully migrated include:
- webjive, webjive-auth, webjive dashboard charts
- all pypi/simple items