allow stopping server #1679

Job	Run time
build (ubuntu-24.04, clang-18)	5m 45s
build (ubuntu-24.04, gcc-14)	5m 26s
build (macos-13, clang-14)	7m 35s
build (macos-14, armv8-clang-14)	3m 56s
build (windows-2022, msvc-1940)	4m 15s
build-test-downstream (ubuntu-24.04, clang-18)	4m 36s
build-test-downstream (ubuntu-24.04, gcc-14)	3m 15s
build-test-downstream (macos-13, clang-14)	4m 10s
build-test-downstream (macos-14, armv8-clang-14)	2m 20s
build-test-downstream (windows-2022, msvc-1940)	3m 33s
docker (ubuntu-24.04, clang-18)	23s
test (ubuntu-24.04, clang-18)	3m 41s
test (ubuntu-24.04, gcc-14)	4m 1s
test (macos-13, clang-14)	5m 13s
test (macos-14, armv8-clang-14)	3m 22s
	1h 1m 31s

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