feat(`sol!`): function calls should directly yield result #2281

Job	Run time
miri --no-default-features	5m 0s
features stable	1m 40s
miri	5m 11s
features stable --all-targets	3m 1s
miri --all-features	7m 52s
features nightly	1m 30s
check no_std	44s
features nightly --all-targets	2m 43s
clippy	29s
fmt	13s
docs	29s
test ubuntu-latest stable --no-default-features	1m 5s
wasm	26s
test ubuntu-latest stable	1m 1s
test ubuntu-latest nightly --no-default-features	44s
test ubuntu-latest nightly	48s
test ubuntu-latest 1.81 --no-default-features	34s
test ubuntu-latest 1.81	36s
test windows-latest stable --no-default-features	3m 17s
test windows-latest stable	2m 39s
test windows-latest nightly --no-default-features	2m 9s
test windows-latest nightly	2m 11s
test windows-latest 1.81 --no-default-features	1m 37s
test windows-latest 1.81	1m 24s
test ubuntu-latest 1.81 --features json	37s
test windows-latest 1.81 --features json	1m 58s
test ubuntu-latest nightly --all-features	1m 6s
test windows-latest nightly --all-features	2m 51s
deny / cargo deny check	17s
ci success	1s
	54m 13s

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