git/github export [enhancement]

[vinniec]

Maybe it's not a good idea, but I'm just trying to hypothesize it, would it make sense to add support to this? https://fossil-scm.org/home/doc/trunk/www/mirrortogithub.md I don't know if it makes sense since the integration isn't complete, but it might be nice to keep a repository always updated on github while using fossil.