CMake: build examples next to the shared library #63

Job	Run time
build (Windows MSVC17 shared library using OpenSSL, windows-2022, -G "Visual Studio 17 2022" -A x...	3m 12s
build (Unix GCC shared library using LibreSSL, ubuntu-latest, -G "Unix Makefiles", ON, -DOPENSSL_...	1m 53s
build (Unix GCC static library using OpenSSL, ubuntu-latest, -G "Unix Makefiles", OFF, Debug)	2m 3s
build (OSX clang shared library using LibreSSL, macos-latest, -G "Unix Makefiles", ON, -DOPENSSL_...	4m 53s
build (Windows MSVC17 shared library using LibreSSL, windows-2022, -G "Visual Studio 17 2022" -A ...	2m 55s
build (OSX clang static library using OpenSSL, macos-latest, -G "Unix Makefiles", OFF, Debug)	5m 20s
	20m 16s

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