Add `NestedPath` #3900

Job	Run time
cargo-hack	7m 36s
check-docs	44s
check	2m 52s
cargo-public-api-crates (axum)	1m 27s
cargo-deny check (advisories)	36s
cargo-public-api-crates (axum-core)	1m 11s
dependencies-are-sorted	25s
cargo-deny check (bans licenses sources)	38s
cargo-public-api-crates (axum-extra)	1m 27s
Spell Check with Typos	6s
cargo-public-api-crates (axum-macros)	1m 6s
test-docs	4m 44s
test-nightly	2m 59s
test-msrv	8m 15s
test-versions (stable)	4m 38s
test-versions (beta)	4m 6s
armv5te-unknown-linux-musleabi	1m 46s
wasm32-unknown-unknown	27s
	45m 3s

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