docs(boring-stack): add routing page

docs/boring-stack/routing.md

@@ -0,0 +1,44 @@
+---
+title: Routing
+titleTemplate: The Boring JavaScript Stack 🥱
+description: In The Boring JavaScript Stack, all of your application's routes are defined server-side. This means that you don't need Vue Router or React Router.
+prev:
+  text: 'Getting Started'
+  link: '/boring-stack/getting-started'
+editLink: true
+---
+
+# Routing
+
+## Defining routes
+
+In The Boring JavaScript Stack, all of your application's routes are defined server-side. This means that you don't need Vue Router or React Router.
+
+Instead, you can simply define [Sails routes](https://sailsjs.com/documentation/concepts/routes) and return an Inertia responses for SPA or return a server-side view for server-side rendering from those routes.
+
+For example let's say we want to create a `/users` route, we can define the route in `config/routes.js`:
+
+```js
+module.exports.routes = {
+  'GET /users': 'user/view-users' // [!code focus]
+}
+```
+
+The above route definition means that when a user requests the `/users` page of your app, the `view-users` action of the `user` controller will handle that request. Let's implement `user/view-users`.
+
+::: tip
+Run `npx sails generate action user/view-users` to scaffold the action.
+:::
+
+```js
+module.exports = {
+  inputs: {},
+  exits: {
+    success: {}
+  },
+  fn: async function (inputs) {
+    const users = await User.find()
+    return sails.inertia.render('users/index', { users }) // [!code focus]
+  }
+}
+```