intrinsify nuxt-starterkit .cursorrules file for TypeScript

# Nuxt
- If possible, use nuxt native functionality. The includes the Nitro server as well. 
- If packages needs to be added, check if there is a nuxt module available, which is compatible with 3.x or 4.x.
- Pay attention to the new folder structure of Nuxt, which is enabled by the future compabilityMode to Version 4. That means to opt-in into nuxt 4 features, until nuxt 4 will be finally released. That will help us to keep the structure clean. See Nuxt folder strucutre
- Nuxt has an awesome auto-import function. Don't import components or other stuff i

## Nuxt folder structure

Nuxt 4 new folder strucutre:

What Changed
the new Nuxt default srcDir is app/ by default, and most things are resolved from there.
serverDir now defaults to <rootDir>/server rather than <srcDir>/server
layers/, modules/ and public/ are resolved relative to <rootDir> by default
if using Nuxt Content v2.13+, content/ is resolved relative to <rootDir>
a new dir.app is added, which is the directory we look for router.options.ts and spa-loading-template.html - this defaults to <srcDir>/

example setup:

.output/
.nuxt/
app/
  assets/
  components/
  composables/
  layouts/
  middleware/
  pages/
  plugins/
  utils/
  app.config.ts
  app.vue
  router.options.ts
content/
layers/
modules/
node_modules/
public/
server/
  api/
  middleware/
  plugins/
  routes/
  utils/
nuxt.config.ts

Important Note: The auth middleware to protect ADMIN pages lives in server/middleware NOT app/middleware or /middleware.

# Nitro

When writing api routes using Nitro use the xy.get.ts and xy.post.ts and differ between the http methods. Don't mix it up in one file.

# Vue
- Put the script tag always on top of vue files. Add the setup attribue and the language to typescript. e.g. <script setup lang="ts">
- Use the composition api only, to write logic. 

# Database
- Use PRIMSA as a ORM. 

# CSS Classes and Tailwind

Use the css classes given in the assets. Don't use tailwind barley and and only if really needed. Tailwindcss will be in addion to our component based logic. Add a comment if classes have been changed or updated in this format: /*TODO: changed class:  */. 

# Types
- Use type over interface! This is a rule!