feat(alloy-rpc-types-eth): Optional serde #3909

Job	Run time
clippy	59s
cfg-check	36s
docs	1m 6s
check no_std	30s
doctest	2m 9s
feature-checks	4m 2s
fmt	11s
test ubuntu-latest stable --no-default-features	1m 58s
wasm-unknown	1m 31s
wasm-wasi	2m 13s
test ubuntu-latest stable	1m 48s
test ubuntu-latest stable --all-features	2m 29s
test ubuntu-latest nightly --no-default-features	1m 24s
test ubuntu-latest nightly	1m 15s
test ubuntu-latest nightly --all-features	2m 3s
test ubuntu-latest 1.79 --no-default-features	50s
test ubuntu-latest 1.79	1m 1s
test windows-latest stable --no-default-features	4m 13s
test windows-latest stable	5m 4s
test windows-latest stable --all-features	5m 9s
test windows-latest nightly --no-default-features	3m 37s
test windows-latest nightly	3m 46s
test windows-latest nightly --all-features	4m 51s
test windows-latest 1.79 --no-default-features	2m 38s
test windows-latest 1.79	2m 52s
	58m 15s

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