feat: add has_eip155_value convenience function to signature #2120

Job	Run time
miri --no-default-features	5m 3s
miri	5m 1s
test ubuntu-latest stable --no-default-features	1m 8s
miri --all-features	7m 29s
features stable	2m 13s
test ubuntu-latest stable	1m 8s
check no_std	48s
test ubuntu-latest nightly --no-default-features	1m 21s
features stable --all-targets	3m 29s
test ubuntu-latest nightly	1m 22s
features nightly	2m 22s
wasm	39s
features nightly --all-targets	3m 44s
test ubuntu-latest 1.79 --no-default-features	38s
test ubuntu-latest 1.79	37s
clippy	1m 22s
test windows-latest stable --no-default-features	3m 16s
docs	56s
test windows-latest stable	3m 36s
test windows-latest nightly --no-default-features	3m 21s
test windows-latest nightly	3m 6s
fmt	14s
test windows-latest 1.79 --no-default-features	1m 37s
test windows-latest 1.79	1m 37s
test ubuntu-latest 1.79 --features json	38s
test windows-latest 1.79 --features json	1m 46s
test ubuntu-latest nightly --all-features	1m 24s
test windows-latest nightly --all-features	3m 42s
	1h 3m 37s

Provide feedback