Closes: #40011

it should not take more effort than solving self-sbws issues.

since it is now managed automatically by versioneer.
Instead, suggest creating a "next" maintainance branch.
But stop using `-` and `.` characters in it, to type it faster, since
most of the new branches will be based on it.

since now sbws version is calculated from last release tag.

Since it is now done by `versioneer`.

releases can live now in gitlab.tpo, instead of github.com and
there is no need to check them since Gitlab is FLOSS and gitlab.tpo is
hosted by Tor Project.

Also, stop assuming which is the current branch and remote and do not
push. Instead guide the maintainer to do it.

remove included script that does that

GH: ref #201

GH: ref #143

GH: ref #182