refactor(iroh-net)!: Rename MagicEndpoint -> Endpoint #8205

Job	Run time
Checking docs	1m 38s
Checking fmt	13s
cargo deny	30s
check_semver	3m 54s
clippy_check	2m 20s
Cross compile (i686-unknown-linux-gnu)	2m 27s
Minimal Supported Rust Version	1m 17s
Cross compile (armv7-linux-androideabi)	59s
Run network simulations/benchmarks	6m 34s
Cross compile (aarch64-linux-android)	1m 0s
CI Test Suite / Tests (ubuntu-latest, stable, all)	3m 9s
CI Test Suite / Tests (windows-latest, stable, all, x86_64-pc-windows-msvc)	3m 48s
CI Test Suite / Tests (windows-latest, stable, none, x86_64-pc-windows-msvc)	2m 32s
CI Test Suite / Tests (windows-latest, stable, default, x86_64-pc-windows-msvc)	3m 45s
CI Test Suite / Tests (ubuntu-latest, stable, none)	2m 48s
CI Test Suite / Tests (ubuntu-latest, stable, default)	2m 52s
CI Test Suite / Tests (macOS-arm-latest, stable, all)	3m 43s
CI Test Suite / Tests (macOS-arm-latest, stable, none)	2m 56s
CI Test Suite / Tests (macOS-arm-latest, stable, default)	3m 33s
	49m 58s

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