feat: implement precompile contract for opBNB #21

Job	Run time
check no-default-features	41s
check serde	44s
check std	49s
test stable --no-default-features	1m 6s
test stable	1m 0s
test stable --all-features	1m 31s
clippy	1m 11s
test beta --no-default-features	1m 1s
fmt	11s
docs	1m 26s
test beta	1m 6s
test beta --all-features	1m 37s
test nightly --no-default-features	1m 2s
test nightly	1m 4s
test nightly --all-features	1m 30s
	15m 59s

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