Migrate to datapipelines repository
This MR updates README documentation and references to the project new home and name.
How to register an account on GitLab. To prevent spam, new accounts are locked until approved by an admin or the approver bot. You can also file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
This MR updates README documentation and references to the project new home and name.