* default wallet receive to listen on 127.0.0.1, optional flag on wallet command to listen on 0.0.0.0
* fix simulnet for new wallet port/interface config
Moved the HTTP APIs away from the REST endpoint abstraction and
to simpler Hyper handlers. Re-established all routes as v1.
Changed wallet receiver port to 13415 to avoid a gap in port
numbers.
Finally, rustfmt seems to have ignored specific files arguments,
running on everything.
* mount v2 router for flexibility, wallet checker now refreshes multiple outputs via single api call
* fix the api router
* wallet api handlers, miner uses wallet_client
* retry logic via tokio_retry, miner creates new coinbase output via wallet API (retries several times)
* move wallet client into wallet crateand rework the lock acquisition logic to use tokio_retry
