Add .gitattributes (#733) #4553

Job	Run time
pre-commit / check-file-sizes	5s
pre-commit / pre-commit	2m 3s
mac / clang-build (Debug)	2m 11s
mac / clang-build (Release)	2m 36s
ubuntu / gcc-build (ubuntu-24.04, Release)	2m 22s
windows / msvc-build (Debug)	3m 30s
windows / clang-build	2m 38s
ubuntu / clang-build (ubuntu-24.04)	3m 10s
ubuntu / gcc-build (ubuntu-24.04, Debug)	2m 2s
windows / msvc-build (Release)	3m 10s
ubuntu / gcc-test (ubuntu-24.04)	8m 37s
mac / clang-test	4m 40s
windows / clang-test	3m 20s
ubuntu / clang-test (ubuntu-24.04)	8m 21s
ubuntu / clang-sanitizer-build (ubuntu-24.04)	3m 34s
windows / msvc-test	5m 8s
windows / clang-test-extended	4m 31s
ubuntu / clang-sanitizer-test (ubuntu-24.04)	2m 49s
mac / clang-test-extended	2m 42s
windows / msvc-test-extended	3m 1s
ubuntu / clang-sanitizer-test-extended (ubuntu-24.04)	2m 21s
ubuntu / gcc-test-extended (ubuntu-24.04)	4m 40s
ubuntu / clang-test-extended (ubuntu-24.04)	4m 31s
ubuntu / gcc-build-codecov	7m 24s
perf / ubuntu-gcc-build-perf-stats	1m 27s
perf / macos-clang-build-perf-stats	1m 51s
pages / build-scoreboard	16s
pages / build-doxygen-xml	20s
pages / build-sphinx	39s
pages / deploy-pages	0s
	1h 33m 59s

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