feat(iroh): implement Discovery for Arc'ed Discovery types #12140

Job	Run time
Cross Test (i686-unknown-linux-gnu)	1m 58s
check_semver	3m 22s
Cross Build Only (x86_64-unknown-freebsd)	43s
Build wasm32	31s
Android Build Only (aarch64-linux-android)	1m 12s
Android Build Only (armv7-linux-androideabi)	1m 3s
Checking docs	1m 2s
cargo deny	26s
Checking fmt	32s
clippy_check	1m 53s
codespell	5s
Minimal Supported Rust Version	53s
CI Test Suite / Tests (ubuntu-latest, stable, all)	2m 28s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 23s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	2m 25s
CI Test Suite / Tests (ubuntu-latest, stable, default)	2m 30s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	2m 7s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	2m 33s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	2m 17s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	2m 22s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	2m 34s
netsim-integration-tests / Netsim	5m 10s
	40m 29s

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