[FR] Publish to the Bazel BCR

**Is your feature request related to a problem? Please describe.**
This makes Google Benchmark simple to add as a dependency in a bazel project.

**Describe the solution you'd like**
The repository would install the [Publish to BCR](https://github.com/bazel-contrib/publish-to-bcr ) github application to automate the submission of any releases to the Bazel Central Registry [BCR](https://github.com/bazelbuild/bazel-central-registry)

**Describe alternatives you've considered**
A user can use the `git_override` commands in their MODULE.bazel but this requires knowledge of the commit sha of the repo and can't be cached by bazel's repository cache.