feat: implement precompile contract for opBNB #23

Job	Run time
check no-default-features	1m 0s
check serde	43s
check std	42s
clippy	1m 3s
docs	1m 26s
fmt	4s
test stable --no-default-features	2m 18s
test stable	2m 23s
test stable --all-features	2m 36s
test beta --no-default-features	2m 32s
test beta	2m 26s
test beta --all-features	2m 36s
test nightly --no-default-features	2m 15s
test nightly	2m 12s
test nightly --all-features	2m 18s
	26m 34s

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