BEF 1.5.2 April 2022 Support Targets in Root Package

Prior to this release, a BUILD file in the root of the Bazel workspace would be ignored. It was thought to be an uncommon practice to root source code in the root of the repository. But based on user feedback, we learned this was more common than we thought. This release supports importing of the Java targets in the BUILD file at the root of the workspace. See issue #404 for more details.