chore(bazel): add MODULE.bazel files for bzlmod

Passed in 1m 36s
:pipeline:curl -sS "https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?$(date +%s)" -o bazelci.py && python3.6 bazelci.py project_pipeline | tee /dev/tty | buildkite-agent pipeline upload
Waited 11s
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Ran in 6s
:ubuntu: Ubuntu 18.04 LTS (OpenJDK 11, gcc 7.5.0)curl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1710234790 -o bazelci.py && python3.6 bazelci.py runner --task=ubuntu1804
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Ran in 43s
:mac: macOScurl -sS https://raw.githubusercontent.com/bazelbuild/continuous-integration/master/buildkite/bazelci.py?1710234790 -o bazelci.py && python3 bazelci.py runner --task=macos
Waited 9s
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Ran in 1m 23s
Total Job Run Time: 2m 11s