Add CITING.md #4565

Job	Run time
pre-commit / check-file-sizes	7s
pre-commit / pre-commit	1m 50s
ubuntu / clang-build (ubuntu-24.04)	3m 1s
mac / clang-build (Release)	2m 39s
windows / clang-build	2m 7s
windows / msvc-build (Release)	1m 33s
mac / clang-build (Debug)	2m 3s
ubuntu / gcc-build (ubuntu-24.04, Debug)	2m 20s
windows / msvc-build (Debug)	3m 13s
ubuntu / gcc-build (ubuntu-24.04, Release)	2m 37s
windows / clang-test	3m 2s
ubuntu / gcc-test (ubuntu-24.04)	8m 22s
mac / clang-test	4m 29s
ubuntu / clang-test (ubuntu-24.04)	8m 21s
ubuntu / clang-sanitizer-build (ubuntu-24.04)	3m 17s
windows / msvc-test	4m 41s
windows / clang-test-extended	2m 59s
ubuntu / clang-sanitizer-test (ubuntu-24.04)	3m 4s
mac / clang-test-extended	3m 0s
windows / msvc-test-extended	2m 59s
ubuntu / clang-sanitizer-test-extended (ubuntu-24.04)	2m 10s
ubuntu / gcc-test-extended (ubuntu-24.04)	23s
ubuntu / clang-test-extended (ubuntu-24.04)	12s
ubuntu / gcc-build-codecov	1s
perf	0s
pages	0s
	1h 8m 30s

Provide feedback