**Reason**: Orphaned by WMF. Mostly a fork of https://github.com/omissis/php-cloudfiles
- [x] Archive documentation on `mediawiki.org` ( provide the URL to the extension/skin here )
- [x] Remove from `mediawiki/extensions` ( along with in `.gitmodules`)
- [ ] 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.
- [ ] Archive Phabricator project #MediaWiki-extensions-SwiftCloudFiles for associated extension/skin
- [ ] 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
- [ ] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-extensions-SwiftCloudFiles