feat: `MsgToL1` hash computation (#476) #211

Job	Run time
Build starknet-ff features	49s
Build starknet-curve features	14s
Build starknet-crypto-codegen features	24s
Build starknet-crypto features	31s
Build starknet-core features	1m 4s
Build starknet-providers features	1m 42s
Build starknet-signers features	35s
Build starknet-accounts features	50s
Build starknet-contract features	50s
Build starknet-macros features	49s
Build starknet features	1m 34s
	9m 22s

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