**Reason**
The Geoshapes service was never deployed, and yet its code sits around confusing people e.g. in T364779. Let's just empty the repo and archive it.
**To-do list**
- This task
-- [x] Add maintainers of that service as subscribers to this task (if they have no apparent Phabricator account, notify them on-wiki or via email if possible and note it here).
-- [x] Add Phabricator project #maps-geoshapes as a tag for this task
- On-wiki documentation
-- [ ] ~~Archive documentation on `mediawiki.org`~~
- Configuration/tests/integrations/etc.
-- [x] Remove tests in [[ https://gerrit.wikimedia.org/g/integration/config | integration/config ]] ([[ https://gerrit.wikimedia.org/r/plugins/gitiles/integration/config/+/master/zuul/layout.yaml | zuul/layout.yaml ]]).
- Repositories
-- [x] Empty repository, leaving only the README indicating the repo is archived, and referring to this task by URL.
-- [ ] Mark the repository read-only in Gerrit (also edit description to prepend "[ARCHIVED T418372]", remove all access lists and reparent on `All-Archived-Projects`): https://gerrit.wikimedia.org/g/mediawiki/services/geoshapes
-- [ ] Deactivate the Diffusion repository for the extension/skin: https://phabricator.wikimedia.org/diffusion/MSGE/
-- [ ] Delete the GitHub mirror: https://github.com/wikimedia/mediawiki-services-geoshapes