**Reason**: Orphaned by WMF. Mostly a fork of https://github.com/omissis/php-cloudfiles
- [x] Archive documentation on `mediawiki.org` ( https://www.mediawiki.org/w/index.php?title=Extension%3ASwiftCloudFiles&type=revision&diff=2641567&oldid=1967571 )
- [x] Remove from `mediawiki/extensions` ( along with in `.gitmodules`)
- [x] Remove tests in `integration/config` ( `zuul/layout.yaml` )
- [x] Remove from `translatewiki` ( `groups/MediaWiki/mediawiki-extensions.txt` / `groups/MediaWiki/mediawiki-skins.txt` )
- [x] Remove manifest/other references from `mediawiki/vagrant` if they exist
- [x] Empty repository and add a OBSOLETE file.
- [x] Archive Phabricator project #MediaWiki-extensions-SwiftCloudFiles for associated extension/skin
- [x] Edit Phabricator project #MediaWiki-extensions-SwiftCloudFiles description for associated extension/skin with a link to this ticket
- [ ] Archive the extension's diffusion repository: rESCF
- [x] Mark the repository read-only in Gerrit: https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/extensions/SwiftCloudFiles
- [x] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-extensions-SwiftCloudFiles