(TK-44) Webrouting Documentation

This PR adds documentation for the webrouting service as well as an example webrouting application.
Yeah, I agree this requirement is strange. It was sparked by the old requirement that there be a server with id of `:default` when configuring multiple servers, since this service also has versions of functions that don't require a `:route-id` to be specified. I am most definitely open to revisiting/changing this requirement.