feat(iroh): implement Discovery for Arc'ed Discovery types #12175

Job	Run time
Cross Build Only (x86_64-unknown-freebsd)	42s
Android Build Only (aarch64-linux-android)	31s
check_semver	27s
Android Build Only (armv7-linux-androideabi)	31s
Cross Test (i686-unknown-linux-gnu)	41s
Build wasm32	32s
cargo deny	25s
Checking docs	40s
clippy_check	39s
Checking fmt	21s
codespell	4s
Minimal Supported Rust Version	40s
CI Test Suite / Tests (ubuntu-latest, stable, all)	39s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	30s
CI Test Suite / Tests (ubuntu-latest, stable, none)	1s
CI Test Suite / Tests (ubuntu-latest, stable, default)	1s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	39s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	1s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	1s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	30s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	42s
netsim-integration-tests / Netsim	1s
	9m 18s

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