Make generate_workspace also generate a BUILD file with transitive deps
Make generate_workspace also generate a BUILD file with transitive deps

Fixes #89.

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MOS_MIGRATED_REVID=98832811

bazelbuild/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website,bazelbuild/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website