mention used code style #305

Job	Run time
Build and test cmake:gcc9	48s
Build and test cmake:clang12	42s
Build and test cmake:clang12:asan	1m 8s
Build and test cmake:clang12:tsan	1m 29s
Build and test cmake:clang12:ubsan	1m 7s
Build and test cmake:qemu-arm-neon-gcc	2m 6s
Build and test cmake-osx:clang	47s
Build and test cmake-osx:gcc	58s
Build and test cmake-win64:msvc2019-rel	1m 8s
Build and test cmake-win64:msvc2019-dbg	1m 52s
Build and test fuzz:clang12	40s
Build and test python39:clang12	2m 37s
Build and test python39-win	50s
Build and test maven	40s
Build and test bazel:root	58s
Build and test bazel:go	1m 19s
Build and test bazel:java	3m 10s
Build and test bazel:js	5m 43s
Build and test bazel:research	29s
Build and test bazel-osx:root	3m 6s
Build and test bazel-osx:go	4m 31s
Build and test bazel-osx:java	7m 36s
Build and test bazel-osx:js	9m 33s
Build and test bazel-osx:research	3m 6s
Build and test bazel-win:root	1m 37s
Build and test bazel-win:java	5m 10s
Build and test bazel-win:research	1m 29s
	1h 4m 39s

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