feat: `MsgToL1` hash computation #132

Job	Run time
Build starknet-ff features	1m 8s
Build starknet-curve features	25s
Build starknet-crypto-codegen features	32s
Build starknet-crypto features	45s
Build starknet-core features	1m 30s
Build starknet-providers features	1m 58s
Build starknet-signers features	56s
Build starknet-accounts features	1m 49s
Build starknet-contract features	1m 32s
Build starknet-macros features	1m 1s
Build starknet features	2m 25s
	14m 1s

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