Add UI support for displaying properties from Folksonomy engine

[teolemon]

What

• Add UI support for displaying properties from Folksonomy engine

Code pointers

Mockups

Figma mockups

• Folksonomy Engine: https://www.figma.com/files/project/33303529
• Beware that:
  • they might not be final and might not have been signed off
  • there might be some additional related mockups not in this file. Please ask @teolemon for a confirmation

Part of

• Add support for the Folksonomy Engine in the mobile app (Tracker issue) #697

[teolemon]

@monsieurtanuki I'm bumping it to P1, in the context of Open Products Facts update

[monsieurtanuki]

@teolemon So far we had limited support of Folksonomy in off-dart, especially because we couldn't authenticate.
Now there's a /auth to call, that returns a bearer token, to be implemented in off-dart.
A big problem is that we don't have a working TEST env (api.folksonomy.openfoodfacts.net) for Folksonomy: are there expected improvements about that? Meanwhile, is that OK to run the unit tests in the PROD env, loading it with crap test data?