It is important that potential contributors know who
they should get in touch, who is supposed to review
their work, and maintainers to know how they should
introduce changes.
Thus, this commit documents the current maintainers
together with what they maintain, and the workflow
between maintainers as well.
[skip ci]
The maintainers listed there aren't maintaining it anymore,
and shouldn't be pinged about Settings. Please let me know
if any of you want your maintainership status back again.