Function createTorrentBridge

createTorrentBridge(backend?: TorrentBackend): Bridge
Creates the bridge for magnet links. Peers in a swarm see the user's address and what they fetch, and the transfer is not encrypted.
Parameters
- Optionalbackend: TorrentBackend
  The download engine; without one the bridge reports itself unavailable.
Returns Bridge
A bridge with id torrent labelled downloads.
Example
```
const bridge = createTorrentBridge(engine);
const job = await bridge.resolve(parseLocator(magnetLink), { requester: 'shell' });
```