Added code of conduct. #3

Job	Run time
buildbot / check-if-allowed	1s
buildbot / print	1m 1s
buildbot / msan	5m 9s
buildbot / asan (njs)	4m 1s
buildbot / test (alpine-3.19, amd64)	5m 54s
buildbot / asan (quickjs)	4m 52s
buildbot / test (alpine-3.19, arm64)	3m 58s
buildbot / test (amazonlinux-2, amd64)	3m 27s
buildbot / test (amazonlinux-2, arm64)	2m 34s
buildbot / test (amazonlinux-2023, amd64)	8m 10s
buildbot / test (amazonlinux-2023, arm64)	5m 39s
buildbot / test (debian-11, amd64)	3m 45s
buildbot / test (debian-11, arm64)	2m 55s
buildbot / test (debian-12, amd64)	4m 47s
buildbot / test (debian-12, arm64)	3m 24s
buildbot / test (freebsd-14, amd64)	4m 6s
buildbot / test (rhel-7, amd64)	2m 45s
buildbot / test (rhel-8, amd64)	4m 20s
buildbot / test (rhel-8, arm64)	2m 45s
buildbot / test (rhel-9, amd64)	7m 50s
buildbot / test (rhel-9, arm64)	5m 40s
buildbot / test (sles-12, amd64)	2m 17s
buildbot / test (ubuntu-20.04, amd64)	4m 35s
buildbot / test (ubuntu-20.04, arm64)	3m 7s
buildbot / test (ubuntu-22.04, amd64)	7m 28s
buildbot / test (ubuntu-22.04, arm64)	5m 31s
buildbot / test (ubuntu-23.10, amd64)	7m 57s
buildbot / test (ubuntu-23.10, arm64)	5m 59s
buildbot / test (debian-12, x86)	5m 27s
	2h 9m 24s

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