nvme: Add APIs for managing nvme_ctrl instances #330

Job	Run time
basic sanity build	33s
run scan-build	14s
compiler builds (gcc)	22s
run emulated nvme device tests (fedora, 38, default)	29s
distribution builds (almalinux, 8)	30s
compiler builds (clang)	10s
run emulated nvme device tests (fedora, rawhide, iommufd)	36s
distribution builds (almalinux, 9)	33s
run sparse	14s
distribution builds (alpine, latest)	24s
distribution builds (archlinux, latest)	21s
distribution builds (debian, trixie)	34s
distribution builds (debian, bookworm)	28s
distribution builds (debian, bullseye)	34s
distribution builds (debian, buster)	45s
distribution builds (fedora, rawhide)	38s
distribution builds (fedora, 38)	53s
distribution builds (fedora, 37)	1m 6s
distribution builds (rockylinux, 8)	43s
distribution builds (rockylinux, 9)	41s
distribution builds (ubuntu, mantic)	39s
distribution builds (ubuntu, lunar)	32s
distribution builds (ubuntu, jammy)	26s
distribution builds (ubuntu, focal)	34s
	12m 59s

Provide feedback