Missing support for API routes

In the manifest yaml file it is possible to define alternative routes with params
note: The cli does not output these urls after a successful build/deploy/run, and they are not currently added to config.json

Our localhost express server should handle these routes, and map them to the correct actions with params.

Start with the manifest YAML handling, config.json generation, and the localhost Express server used by the dev command. Trace a successful build, deploy, or run to see where URLs are reported and routes are configured. Done means parameterized alternative routes appear in config.json and CLI output, and the local server maps them to the correct actions.

Written by the indexing model from the issue text.