Well that is the plan eventually for ngit and gitworkshop.dev but 1) there are ongoing conversations about the spec, 2) the products are not mature enough for production use with breaking changes coming and 3) the problem space that github covers is large.
We are looking at the high impact problems first. Sensorship resistant contribution to freedom orientated projects and mitigating the disruption a project ban would have by moving the collaboration off around PRs and Issues.
I havn't heard any talk yet about using ci tools via DVMs or alternative solutions for many other aspects of githubs offering.