I couldn't find a proper API, so while this matches lots of packages
it also includes testing/unstable versions which makes for a lot
of false positives would we use it to detect new versions, so it's
marked as a fallback provider for now.
testing, community* are gone; core-testing, extra-testing are new
also remove multilib, likely doesn't include anything that helps us.
and switch to a different mirror which apparently updates more often.
Both builders will upload the complete build status when they run,
but up until now we only read the one from the main autobuild repo.
This meant that if the arm runner was building something without
the main autobuild running the website wouldn't notice and always
show the out of date state until the next scheduled run.
This now loads both and takes the newest according to the last-modified header
send by github. To keep local caching working during development we
store the last-modified as the cache file mtime.
This adds the following things:
* the mapping data is now sourced from the package repositories
* cygwin mapping works too (for example see "msys2-runtime")
* packages can be marked internal so they are never linked
to arch or cygwin (for example see "base")
This is conceptionally similar to a pkgbase, but for groups.
Something like this doesn't really exist on the PKGBUILD level,
but end users can't really work with pkgbase with pacman either,
so for them that doesn't matter.
It still gives the end user the same structure as with packages,
there is a base thing that has multiple instances for each environment,
and searching might be a bit easier.
The UX could be improved, but the basics are there at least.
Fixes#47
