refactor(routes): move product/products from cms to ecommerce domain

Product and products routes were sitting under /api/cms but conceptually
belong to a separate e-commerce domain. Split them out into a dedicated
ecommerce subrouter mounted at /api/ecommerce.

src/routes/api/index.js

@@ -2,6 +2,7 @@ var routes = require('express').Router();
 
 routes.use('/skydive', require('./skydive'));
 routes.use('/cms', require('./cms'));
+routes.use('/ecommerce', require('./ecommerce'));
 routes.use('/herowars', require('./herowars'));
 
 module.exports = routes;