Add GHA CMake install/subdir tests #1

Job	Run time
windows-cmake-install (windows-2019)	3m 15s
posix-cmake-subdir (ubuntu-20.04)	42s
posix-cmake-install (ubuntu-20.04)	43s
windows-cmake-install (windows-2022)	2m 36s
posix-cmake-subdir (ubuntu-22.04)	52s
windows-cmake-subdir (windows-2019)	3m 3s
posix-cmake-install (ubuntu-22.04)	51s
posix-cmake-subdir (macos-11)	58s
windows-cmake-subdir (windows-2022)	2m 17s
posix-cmake-install (macos-11)	1m 12s
posix-cmake-subdir (macos-12)	56s
posix-cmake-install (macos-12)	1m 20s
posix-cmake-subdir (macos-13)	1m 37s
posix-cmake-install (macos-13)	1m 6s
	21m 28s

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