feat(`sol!`)!: generate unit/tuple structs for errors with 0/1 param #2380

Job	Run time
wasm	13s
miri --no-default-features	37s
clippy	25s
miri	43s
check no_std	19s
miri --all-features	45s
docs	19s
features stable	22s
fmt	13s
features stable --all-targets	24s
test ubuntu-latest stable --no-default-features	16s
test ubuntu-latest stable	20s
test ubuntu-latest nightly --no-default-features	26s
features nightly	25s
test ubuntu-latest nightly	26s
features nightly --all-targets	25s
test ubuntu-latest 1.81 --no-default-features	26s
test ubuntu-latest 1.81	28s
test windows-latest stable --no-default-features	2m 30s
test windows-latest stable	2m 16s
test windows-latest nightly --no-default-features	1m 15s
test windows-latest nightly	1m 11s
test windows-latest 1.81 --no-default-features	1m 1s
test windows-latest 1.81	1m 8s
test ubuntu-latest 1.81 --features json	29s
test windows-latest 1.81 --features json	1m 6s
test ubuntu-latest nightly --all-features	32s
test windows-latest nightly --all-features	1m 35s
deny / cargo deny check	15s
ci success	4s
	20m 54s

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