Add support for https://registry.bazel.build

[andrew]

registry: https://registry.bazel.build/

code: https://github.com/bazelbuild/bazel-central-registry

data: https://github.com/bazelbuild/bazel-central-registry/tree/main/modules

schema: https://github.com/bazelbuild/bazel-central-registry/blob/main/metadata.schema.json