The code for OOjs Router currently lives in rGOJR OOjs Router, we should move it to Gerrit.
- Request a repo no Gerrit - https://gerrit.wikimedia.org/r/#/admin/projects/oojs/router
- Make rGOJR to observe changes from Gerrit.
- Setup CI for the oojs/router Gerrit repo.
- Wait for something to break? Someone to complain?