Use repo-relative labels everywhere

[fmeum]

This makes it possible to load gazelle under any repo name, not
necessarily bazel_gazelle. This opens up the possibility to call the
gazelle Bazel module "gazelle".

[achew22]

Do we not need the checked in BUILD files any more?

[fmeum]

Do we not need the checked in BUILD files any more?

I dropped that commit out of an abundance of caution. I simply don't know, I couldn't find any reference outside of documentation. The tests passed locally with them deleted.

[achew22]

I dropped that commit out of an abundance of caution. I simply don't know, I couldn't find any reference outside of documentation. The tests passed locally with them deleted.

I think it's a good thing to do, but let's do it as a separate PR so that reversion is cleaner

[fmeum]

I dropped that commit out of an abundance of caution. I simply don't know, I couldn't find any reference outside of documentation. The tests passed locally with them deleted.

I think it's a good thing to do, but let's do it as a separate PR so that reversion is cleaner

Sounds good! The current PR should be good enough for bzlmod anyway.

[linzhp]

Successfully ran Gazelle with this patch in Uber's Go monorepo