feat: add additional payloadbody conversion fn #5925

Job	Run time
doctest	1m 31s
wasm-wasi	1m 20s
clippy	56s
check no_std	23s
docs	56s
feature-checks	3m 51s
feature-propagation	48s
fmt	13s
wasm-unknown	1m 0s
test ubuntu-latest stable --no-default-features	1m 43s
test ubuntu-latest stable	2m 1s
test ubuntu-latest stable --all-features	2m 38s
test ubuntu-latest nightly --no-default-features	1m 10s
test ubuntu-latest nightly	1m 31s
test ubuntu-latest nightly --all-features	2m 11s
test ubuntu-latest 1.81 --no-default-features	1m 10s
test ubuntu-latest 1.81	1m 11s
test windows-latest stable --no-default-features	4m 48s
test windows-latest stable	3m 46s
test windows-latest stable --all-features	6m 13s
test windows-latest nightly --no-default-features	3m 43s
test windows-latest nightly	3m 17s
test windows-latest nightly --all-features	5m 19s
test windows-latest 1.81 --no-default-features	2m 25s
test windows-latest 1.81	2m 37s
deny / cargo deny check	21s
ci success	3s
	57m 5s

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