Rust

Extract storage manager related code from sled-agent #23573

Job	Run time
check-omicron-deployment (ubuntu-22.04)	14m 34s
build-docs	18m 34s
check-omicron-deployment (macos-12)	23m 33s
check-style	25s
clippy-lint	22m 52s
	1h 19m 58s

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