Define trait `TransactionEnvelope` #5743

Job	Run time
wasm-wasi	4m 0s
wasm-unknown	2m 52s
clippy	1m 29s
check no_std	1m 1s
docs	1m 1s
doctest	2m 55s
feature-checks	8m 30s
fmt	14s
test ubuntu-latest stable --no-default-features	2m 7s
test ubuntu-latest stable	2m 11s
test ubuntu-latest stable --all-features	2m 15s
test ubuntu-latest nightly --no-default-features	1m 16s
test ubuntu-latest nightly	1m 6s
test ubuntu-latest nightly --all-features	1m 21s
test ubuntu-latest 1.81 --no-default-features	1m 48s
test ubuntu-latest 1.81	1m 50s
test windows-latest stable --no-default-features	4m 59s
test windows-latest stable	4m 59s
test windows-latest stable --all-features	5m 39s
test windows-latest nightly --no-default-features	3m 22s
test windows-latest nightly	3m 51s
test windows-latest nightly --all-features	3m 11s
test windows-latest 1.81 --no-default-features	3m 29s
test windows-latest 1.81	3m 18s
deny / cargo deny check	21s
ci success	4s
	1h 9m 9s

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