Rust

Make the chain manager a `View`. (#3135) #556

Job	Run time
remote-net-test	1s
benchmark-test	17m 36s
check-outdated-cli-md	1m 34s
execution-wasmtime-test	1m 8s
default-features-and-witty-integration-test	24m 4s
wasm-application-test	9m 59s
ethereum-tests	17m 33s
lint-cargo-clippy	11m 33s
lint-cargo-doc	3m 53s
lint-cargo-fmt	17s
lint-cargo-machete	17s
lint-cargo-sort	20s
lint-check-all-features	1s
lint-check-copyright-headers	15s
lint-check-for-outdated-readme	34s
lint-check-linera-service-graphql-schema	1m 5s
lint-unexpected-chain-load-operations	3s
lint-wasm-applications	3m 31s
storage-service-tests	1s
web	4m 1s
	1h 37m 46s

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