Reuses HTTPProxy's Roundtrip method to directly proxy websockets from
eyeball clients (determined by websocket type and ingress not being
connection oriented , i.e. Not ssh or smb for example) to proxy
websocket traffic.
- Move packages the provide generic functionality (such as config) from `cmd` subtree to top level.
- Remove all dependencies on `cmd` subtree from top level packages.
- Consolidate all code dealing with token generation and transfer to a single cohesive package.
added ingress.DefaultStreamHandler and a basic test for tcp stream proxy
moved websocket.Stream to ingress
cloudflared no longer picks tcpstream host from header
- extracted ResponseWriter from proxyConnection
- added bastion tests over websocket
- removed HTTPResp()
- added some docstrings
- Renamed some ingress clients as proxies
- renamed instances of client to proxy in connection and origin
- Stream no longer takes a context and logger.Service