the PR spiraled and ended up being much larger than anticipated.
it is a refactor of wshrouter to have it track "links" as opposed to
just routes. this lets us simplify a lot of things when it comes to
multi-level routing.
* now the router can handle unauthenticated links directly, instead of a
weird limbo in wshproxy
* no more wshmultiproxy
* no more "authtoken" weirdness
* more straightforward handling in connserver (when using router option)
also adds more debugging, more logging, some windows fixes, other wsl
fixes