Add an encapsulated file stream in axum-extra to make it more conveni… #5092

Job	Run time
check	40s
cargo-hack	4m 46s
cargo-public-api-crates (axum)	40s
check-docs	24s
cargo-public-api-crates (axum-core)	29s
cargo-deny check (advisories)	27s
dependencies-are-sorted	17s
Spell Check with Typos	4s
cargo-public-api-crates (axum-extra)	42s
cargo-deny check (bans licenses sources)	23s
cargo-public-api-crates (axum-macros)	20s
test-msrv	0s
test-nightly	0s
armv5te-unknown-linux-musleabi	0s
test-docs	0s
test-versions	0s
wasm32-unknown-unknown	0s
	9m 12s

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