Plan Github migration

[gubuntu]

This Catalogue repo should be transferred from Kartoza to a SANSA org, where SANSA admins own and manage it, granting access to Kartoza and other contractors.

@Maite-Machipi started by creating a (private?) organisation SANSA-Catalogue. My recommendation is that SANSA create or nominate a wider SANSA GH org that can host multiple repos besides the Catalogue.

Once that is established, a Kartoza admin (me for example) will have to be temporarily added to the SANSA org so we can transfer this Catalogue repo to SANSA, which entails creating the repo (hence requiring membership with sufficient rights to create repos. Thereafter, the Kartoza user can be converted to an outside collaborator along with other non-SANSA staff.

Furthermore, users and admins of the Catalogue repo once in the SANSA org must be individual accounts, not anonymous users such as the 'SANSA-EO' that Maite proposed.