feat(iroh): Accept custom protocols #8565

Job	Run time
Build wasm32	28s
Cross Test (i686-unknown-linux-gnu)	1m 40s
Checking fmt	11s
Checking docs	1m 39s
check_semver	4m 0s
cargo deny	32s
clippy_check	2m 14s
Cross Build Only (armv7-linux-androideabi)	1m 3s
Cross Build Only (aarch64-linux-android)	1m 2s
Cross Build Only (x86_64-unknown-freebsd)	1m 9s
Minimal Supported Rust Version	1m 53s
Cross Build Only (x86_64-unknown-netbsd)	1m 15s
Run network simulations/benchmarks	3m 12s
CI Test Suite / Tests (ubuntu-latest, stable, all)	1m 55s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 50s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 30s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 42s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	1m 58s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	2m 44s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	1m 18s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1m 59s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	1m 40s
	38m 54s

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