Tests

feat: add support for BSC #57

Job	Run time
check no-default-features	57s
check serde	1m 6s
check std	1m 2s
clippy / optimism	1m 49s
docs / optimism	1m 37s
clippy / bsc	1m 41s
docs / bsc	1m 29s
test stable --no-default-features	1m 3s
test stable	1m 5s
fmt	10s
test stable --features bsc	1m 13s
test stable --features optimism,opbnb	1m 17s
test beta --no-default-features	3m 11s
test beta	3m 13s
test beta --features bsc	3m 18s
test beta --features optimism,opbnb	3m 20s
test nightly --no-default-features	2m 49s
test nightly	2m 49s
test nightly --features bsc	2m 55s
test nightly --features optimism,opbnb	2m 57s
	39m 1s

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