feat: implement Arbitrary for transaction types #4920

Job	Run time
doctest	1m 12s
wasm-wasi	1m 27s
test ubuntu-latest stable --no-default-features	1m 28s
wasm-unknown	1m 1s
test ubuntu-latest stable	2m 5s
check no_std	33s
clippy	55s
test ubuntu-latest stable --all-features	2m 27s
docs	56s
test ubuntu-latest nightly --no-default-features	1m 18s
feature-checks	4m 28s
fmt	14s
test ubuntu-latest nightly	1m 19s
test ubuntu-latest nightly --all-features	2m 19s
test ubuntu-latest 1.79 --no-default-features	51s
test ubuntu-latest 1.79	1m 3s
test windows-latest stable --no-default-features	4m 37s
test windows-latest stable	5m 11s
test windows-latest stable --all-features	6m 3s
test windows-latest nightly --no-default-features	4m 25s
test windows-latest nightly	3m 56s
test windows-latest nightly --all-features	6m 12s
test windows-latest 1.79 --no-default-features	2m 56s
test windows-latest 1.79	3m 5s
ci success	2s
	1h 0m 3s

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