Contract wrapper: move some crates to `dev-dependencies` (#915) #859

Job	Run time
build all rust contracts	13m 54s
test eth-prover	7m 19s
test eth-client	12m 20s
test eth2-client	12m 22s
test eth2near/contract_wrapper	11m 0s
test eth2near/finality-update-verify	10m 27s
test eth2near/eth2-to-near-block-relay-rs	13m 3s
test eth2near/eth2-contract-init	11m 27s
test eth2near/eth_rpc_client	11m 11s
	1h 43m 3s

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