feat(transport): Add `Router::into_router` #2011

Job	Run time
Check unused dependencies (ubuntu-latest)	8m 30s
Check unused dependencies (macOS-latest)	12m 2s
Check unused dependencies (windows-latest)	9m 45s
check (ubuntu-latest, stable)	1m 35s
check (macOS-latest, stable)	2m 12s
check (windows-latest, stable)	2m 31s
check docs	1m 9s
cargo-deny check	33s
Interop Tests (ubuntu-latest, stable)	39s
Interop Tests (macOS-latest, stable)	1m 11s
Interop Tests (windows-latest, stable)	1m 55s
Check MSRV	3m 33s
test (ubuntu-latest, stable)	8m 36s
test (macOS-latest, stable)	6m 15s
test (windows-latest, stable)	9m 30s
rustfmt	9s
	1h 10m 5s

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