Core v3: log error handling on WS connection loss

[adrian69]

Expected Behavior

We should print something meaningful, saying we've lost connection 💡

Current Behavior

The error bellow is logged on each WS connection loss:

    at new NesError (/home/node/core/node_modules/@hapi/nes/lib/client.js:69:19)
    at reconnect (/home/node/core/node_modules/@hapi/nes/lib/client.js:203:26)
    at WebSocket.ws.onerror (/home/node/core/node_modules/@hapi/nes/lib/client.js:273:24)
    at WebSocket.onError (/home/node/core/node_modules/ws/lib/event-target.js:128:16)
    at WebSocket.emit (events.js:311:20)
    at ClientRequest.<anonymous> (/home/node/core/node_modules/ws/lib/websocket.js:568:15)
    at ClientRequest.emit (events.js:311:20)
    at Socket.socketErrorListener (_http_client.js:426:9)
    at Socket.emit (events.js:311:20)
    at emitErrorNT (internal/streams/destroy.js:92:8) {
  type: 'ws',
  isNes: true
}