dev #137371 : add Omeka-S METS format in cosmogramme

• OAI data sources are harvested at prepare integration phase
• Omeka-S dashboard in Bokeh admin
• ils_number (id_sigb) added in CASv3 validate response

Negative green https://git.afi-sa.net/afi/negative/-/jobs/36275

Instance preprod http://bokeh.afi-sa.net:10060

Rappel sur le nouveau process

le reviewer ne merge pas, si c'est OK le reviewer met un commentaire pour formaliser son accord.