(TK-20) Webrouting Service

This PR adds a new optional webrouting service that can replace a project's dependency on the Jetty9 webservice. It offers the same functionality as the webservice, but allows the user to specify the endpoints they want specific services to register in their configuration file and add them by passing in the namespaced symbol of a service rather than directly passing in an endpoint.
So, I feel like we should have at least one test around somewhere that creates a fake service and calls service-symbol on it, rather than hard-coding keywords in all of the tests.