chore(rpc-types): Buildable Type #1250

Job	Run time
docs	1m 9s
clippy	1m 16s
cfg-check	59s
doctest	1m 10s
feature-checks	4m 11s
examples	10s
feature-powerset	6m 9s
fmt	16s
no-std	1m 12s
wasm-unknown	1m 40s
test stable --no-default-features	1m 16s
wasm-wasi	1m 51s
test stable	1m 14s
test stable --all-features	1m 32s
test nightly --no-default-features	1m 13s
test nightly	1m 18s
test nightly --all-features	1m 26s
test 1.81 --no-default-features	33s
test 1.81	51s
	29m 26s

Provide feedback