docs for the bazel_gomock library

[jmhodges]

Requested feature

I believe there's a way to public API documentation on Bazel Central Registry (though, I'll admit, I've not been able to google it up).

It would, at least, be nice to have a README in the bazel directory telling you how to load the gomock call. I'm happy to do that README work, but am at a loss for how to publish the existing API docs on BCR.

(Doing a bazel query @bazel_gomock//... turned up nothing obvious on how to load it. It turns out it's load("@bazel_gomock//rules:gomock.bzl", "gomock") for those playing along at home)

Why the feature is needed

It's hard to port to the nice modern uber/mock in a bazel build without some docs pointing you to the right code and without docs that search engines can be pointed out.