Rust

Extract storage manager related code from sled-agent #23571

Job	Run time
check-omicron-deployment (ubuntu-22.04)	16m 4s
check-omicron-deployment (macos-12)	15m 32s
build-docs	16m 14s
check-style	23s
clippy-lint	18m 55s
	1h 7m 8s

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