5fa1a3fc17
- move `LpTransport` trait definition to shared `nym-lp-transport` crate - make transport layer within `LpConnectionHandler` generic with respect to the forwarding target. it must, however, use the same type as the incoming client connection - extracted explicit `LpConnectionHandler::establish_exit_stream` to more easily modify it in the future to fully protect the channel and disallow using untrusted egress points - fix additional log-string interpolation nits