create route middleware

[rohrig]

We can use a similar approach as V2.

detect the route type in a global middleware set the route type in app state ( I think we can just use useState( ) )

• [x] create middleware/route.global.ts
• [x] create pages/[...slug].vue catch-all page
  • [x] route to product/category/cms based on route type

[rohrig]

left cms for later