feat: implement precompile contract for opBNB #22

Job	Run time
check no-default-features	43s
check serde	46s
check std	43s
clippy	1m 16s
docs	1m 25s
fmt	15s
test stable --no-default-features	59s
test stable	1m 7s
test stable --all-features	1m 49s
test beta --no-default-features	2m 31s
test beta	2m 37s
test beta --all-features	2m 37s
test nightly --no-default-features	2m 46s
test nightly	2m 32s
test nightly --all-features	2m 38s
	24m 44s

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