feat: `MsgToL1` hash computation #209

Job	Run time
Build starknet-ff features	40s
Build starknet-curve features	26s
Build starknet-crypto-codegen features	18s
Build starknet-crypto features	27s
Build starknet-core features	50s
Build starknet-providers features	1m 10s
Build starknet-signers features	57s
Build starknet-accounts features	56s
Build starknet-contract features	57s
Build starknet-macros features	37s
Build starknet features	1m 37s
	8m 55s

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