feat(iroh): Accept custom protocols #8576

Job	Run time
Checking fmt	11s
Checking docs	1m 39s
check_semver	4m 41s
cargo deny	30s
clippy_check	2m 29s
Cross Build Only (armv7-linux-androideabi)	1m 1s
Cross Build Only (aarch64-linux-android)	1m 0s
Minimal Supported Rust Version	1m 17s
Cross Test (i686-unknown-linux-gnu)	5m 45s
Run network simulations/benchmarks	7m 6s
Build wasm32	33s
Cross Build Only (x86_64-unknown-freebsd)	1m 7s
Cross Build Only (x86_64-unknown-netbsd)	1m 9s
CI Test Suite / Tests (ubuntu-latest, stable, all)	2m 26s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	3m 53s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 13s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	3m 48s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	3m 46s
CI Test Suite / Tests (ubuntu-latest, stable, default)	2m 13s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	3m 3s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	2m 53s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 54s
	55m 37s

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