Add `remote_addr` field to `lightning_net_tokio::setup_outbound`

    When `setup_outbound` was used to setup a connection proxied over Tor,
    it previously set `remote_addr` to the address of the Tor proxy, and not
    the address of the peer on the other side of the stream.

    The address of the Tor proxy was assigned to the
    `PeerDetails::socket_address` for that peer in
    `PeerManager::list_peers`, and if it was not a private IPV4 or IPV6
    address, it was also reported to the peer in our init message.

    Here we ask callers of `setup_outbound` to pass a `remote_addr`
    separately from the `StdTcpStream`. `connect_outbound` sets this new
    `remote_addr` parameter to `get_addr_from_stream`, and
    `tor_connect_outbound` passes its own `addr` parameter directly to
    `remote_addr`.

    Notably, Onion V3 addresses will now appear in `PeerManager::list_peers`
    for outbound Tor connections to Onion V3 services made using
    `tor_connect_outbound`, and will be reported to the peer in our init
    message.

    While this adds a new parameter to the public `fn setup_outbound`
    function, this closely mirrors the existing public method
    `PeerManager::new_outbound_connection`.