CMake build improvements #419

Job	Run time
clang-format-check	10m 48s
mac-os-build-clang	1h 33m 28s
mac-os-build-gcc	1h 29m 46s
mac-os-build-clang-local-openssl	1h 27m 19s
mac-os-build-gcc-local-openssl	1h 32m 39s
ubuntu-os-gcc-build-lws-mbedtls	1m 36s
address-sanitizer	53m 18s
linux-gcc-code-coverage	51m 8s
mac-os-m1-build-clang	1h 30m 32s
arm64-cross-compilation	7m 43s
ubuntu-gcc	45m 9s
undefined-behavior-sanitizer	49m 47s
windows-msvc	12m 52s
linux-build-gcc-static	4m 32s
linux-aarch64-cross-compilation	8m 1s
arm32-cross-compilation	7m 23s
	11h 46m 1s

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