Add shorthand way to return non-IntoResponse errors #4996

Job	Run time
cargo-hack	5m 50s
check-docs	33s
cargo-public-api-crates (axum)	34s
check	2m 16s
dependencies-are-sorted	31s
cargo-public-api-crates (axum-core)	18s
Spell Check with Typos	4s
cargo-public-api-crates (axum-extra)	32s
cargo-deny check (advisories)	24s
cargo-public-api-crates (axum-macros)	23s
cargo-deny check (bans licenses sources)	34s
test-docs	1m 40s
test-nightly	1m 34s
test-msrv	2m 33s
test-versions (stable)	3m 9s
armv5te-unknown-linux-musleabi	57s
test-versions (beta)	3m 58s
wasm32-unknown-unknown	25s
	26m 15s

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