feat: add general cross messages docs (#1252) #3178

Job	Run time
contracts-prettier / prettier	27s
license / License checks	10s
build / Build IPC	13m 7s
contracts-sast / Solhint check	22s
contracts-sast / Slither check	1m 1s
contracts-sast / Aderyn check	5m 4s
contracts-deployment-test / build	1m 29s
contracts-storage / Storage layout check	1m 12s
extras / Extras: Axelar token	24s
contracts-test / tests	3m 16s
unit-tests / run	16m 39s
fevm-contract-tests / run	4m 20s
e2e-tests / run	23m 11s
docker-publish / Publish artifacts	1h 33m 33s
	2h 44m 15s

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