[FR] Publish to the Bazel BCR

[jsharpe]

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 github application to automate the submission of any releases to the Bazel Central Registry BCR

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.