docs: add brief information on debugging a nuxt app (#20282)

docs/2.guide/3.going-further/9.debugging.md

@@ -0,0 +1,65 @@
+---
+title: "Debugging"
+description: "In Nuxt 3, you can get started with debugging your application directly in the browser as well as in your IDE."
+---
+
+## Sourcemaps
+
+Sourcemaps are enabled for your server build by default, and for the client build in dev mode, but you can enable them more specifically in your configuration.
+
+```ts
+export default defineNuxtConfig({
+  // or sourcemap: true
+  sourcemap: {
+    server: true,
+    client: true
+  }
+})
+```
+
+## Debugging in Your IDE
+
+It is possible to debug your Nuxt app in your IDE while you are developing it.
+
+### Example VS Code Debug Configuration
+
+You may need to update the config below with a path to your web browser. For more information, visit the [VS Code documentation about debug configuration](https://go.microsoft.com/fwlink/?linkid=830387).
+
+```json5
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "type": "chrome",
+      "request": "launch",
+      "name": "client: chrome",
+      "url": "http://localhost:3000",
+      "webRoot": "${workspaceFolder}"
+    },
+    {
+      "type": "node",
+      "request": "launch",
+      "name": "server: nuxt",
+      "program": "${workspaceFolder}/node_modules/nuxi/bin/nuxi.mjs",
+      "args": [
+        "dev"
+      ],
+    }
+  ],
+  "compounds": [
+    {
+      "name": "fullstack: nuxt",
+      "configurations": [
+        "server: nuxt",
+        "client: chrome"
+      ]
+    }
+  ]
+}
+```
+
+### Other IDEs
+
+If you have another IDE and would like to contribute sample configuration, feel free to [open a PR](https://github.com/nuxt/nuxt/edit/main/docs/2.guide/3.going-further/9.debugging.md)!