Tests

Add support for `layering_check` #525

Job	Run time
external_test (macos-latest, latest, true)	1m 48s
external_test (macos-latest, latest, false)	1m 50s
abs_paths_test	1m 49s
external_test (ubuntu-latest, latest, true)	1m 47s
lint	14s
external_test (ubuntu-latest, latest, false)	1m 49s
container_test (archlinux)	1m 49s
container_test (debian)	1m 48s
sys_paths_test	1m 46s
test (macos-latest, 6.0.0, false)	1m 48s
container_test (fedora)	1m 47s
xcompile_test	31s
test (macos-latest, 6.1.0, true)	1m 27s
container_test (suse_leap)	1m 47s
test (macos-latest, latest, true)	1s
container_test (suse_tumbleweed)	1m 49s
test (macos-latest, latest, false)	1m 2s
container_test (ubuntu_20_04)	1m 47s
test (ubuntu-latest, 6.0.0, false)	1m 47s
container_test (ubuntu_22_04)	1m 47s
test (ubuntu-latest, 6.1.0, true)	1m 28s
container_test (linux_sysroot)	1m 48s
test (ubuntu-latest, latest, true)	1s
test (ubuntu-latest, latest, false)	1m 48s
	35m 18s

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