Nice, perhaps is worth to invest into such kind of "fediverse" (using Codeberg with my own hosted action runners/boxes), I'd buy into that feature much faster than into any other (e.g. using Codeberg for PRs from proprietary hosted "Codeberg" instances).
There's also work on that ;) the dude doing most of the work moved to forgejo and some parts are already implemented but I'm not sure what the state is. I would also love to see federation, that's what would really be a github killer and drive this ecosystem forward imho.