refactor(iroh): Allow to register custom protocols #8569

Job	Run time
Cross Build Only (armv7-linux-androideabi)	1m 1s
Cross Build Only (aarch64-linux-android)	1m 1s
Build wasm32	43s
Cross Build Only (x86_64-unknown-freebsd)	1m 6s
Cross Build Only (x86_64-unknown-netbsd)	1m 9s
cargo deny	31s
Checking docs	1m 6s
Checking fmt	11s
check_semver	4m 56s
clippy_check	1m 41s
Cross Test (i686-unknown-linux-gnu)	2m 2s
Minimal Supported Rust Version	1m 44s
Run network simulations/benchmarks	1m 58s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	3m 21s
CI Test Suite / Tests (ubuntu-latest, stable, all)	2m 14s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	3m 15s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 15s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	3m 19s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1m 55s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	2m 52s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	2m 46s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 49s
	43m 55s

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