Add a new endpoint collecting the bodhi updates info for a package
This endpoint returns either a JSON blob or a html table containing all
the releases found in either bodhi or mdapi for the active releases
(pending and stable) retrieved from bodhi.
This endpoint currently only support the `rpms` namespace so it strips
out all the flatpaks, containers and modular releases of Fedora.
Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>