build: Use commit-message-validator template
This helps people write better git commit messages, which is especially helpful when people are trying to debug what went wrong when in production/etc. :-)
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 helps people write better git commit messages, which is especially helpful when people are trying to debug what went wrong when in production/etc. :-)