feat(`sol!`): function calls should directly yield result #2279

Job	Run time
docs	28s
clippy	19s
features stable	2m 18s
check no_std	42s
features stable --all-targets	3m 0s
features nightly	1m 38s
fmt	15s
miri --no-default-features	4m 56s
features nightly --all-targets	2m 55s
wasm	31s
miri	5m 8s
test ubuntu-latest stable --no-default-features	1m 3s
miri --all-features	7m 37s
test ubuntu-latest stable	1m 0s
test ubuntu-latest nightly --no-default-features	45s
test ubuntu-latest nightly	46s
test ubuntu-latest 1.81 --no-default-features	39s
test ubuntu-latest 1.81	37s
test windows-latest stable --no-default-features	3m 18s
test windows-latest stable	3m 24s
test windows-latest nightly --no-default-features	1m 57s
test windows-latest nightly	2m 53s
test windows-latest 1.81 --no-default-features	1m 29s
test windows-latest 1.81	1m 37s
test ubuntu-latest 1.81 --features json	42s
test windows-latest 1.81 --features json	1m 32s
test ubuntu-latest nightly --all-features	1m 5s
test windows-latest nightly --all-features	2m 46s
deny / cargo deny check	14s
ci success	2s
	55m 36s

Provide feedback