build

doc: add nvme list namespace usage sizes description #3096

Job	Run time
cross (s390x)	44s
cross (ppc64le)	51s
cross (armhf)	45s
default (clang, debug)	27s
make static	42s
default (gcc, debug)	30s
muon minimal static	33s
default (clang, release)	39s
default (gcc, release)	35s
build libnvme and nvme-cli separately	37s
fallback shared libraries	0s
	6m 23s

Provide feedback