Add visibility setting to BUILD #240

Job	Run time
tests	30s
lint	19s
windows-cmake-build (walltime)	2m 15s
cmake-integration-tests (instrumentation, ubuntu-latest)	3m 14s
bazel-integration-tests (off, ubuntu-latest)	44s
bazel-integration-tests (walltime, codspeed-macro)	3m 5s
cmake-integration-tests (off, ubuntu-latest)	1m 7s
cmake-integration-tests (walltime, codspeed-macro)	6m 1s
bazel-integration-tests (instrumentation, ubuntu-latest)	2m 4s
windows-bazel-build (off)	1m 24s
windows-cmake-build (off)	3m 4s
windows-bazel-build (walltime)	1m 39s
	25m 26s

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