feat: `op-alloy` meta crate (#210) #751

Job	Run time
doctest	1m 41s
test stable --no-default-features	1m 38s
test stable	1m 23s
wasm-unknown	1m 25s
test stable --all-features	1m 50s
test nightly --no-default-features	41s
cfg-check	23s
test nightly	52s
test nightly --all-features	1m 12s
clippy	1m 7s
test 1.81 --no-default-features	1m 7s
test 1.81	1m 14s
docs	30s
feature-checks	3m 23s
feature-powerset	30m 46s
fmt	12s
no-std	1m 6s
wasm-wasi	1m 26s
	51m 56s

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