[name].router.js
In Rasengan.js, to create a router, you have to create a file that follow the following name pattern:
[name].router.jsA router is a set of pages grouped under the same layout that share it.
Example
Based on the convention, we have juste replace the [name] by app in the convention name and we got app.router.js.
It's required to have your main router inside the app/app.router.js page,
because it's considered as an entry point.
