Add Open Prices deeplinking

[teolemon]

No description provided.

[monsieurtanuki]

Looks like GoRouter does accept subdomains, but won't give access to the subdomain value.

For instance, we can say "please deep-link https://prices.openfoodfacts.org/ to Smoothie" but we'll land in the unique "/" home page - as for https://world.openfoodfacts.org/ and https://at-en.openbeautyfacts.org/ - therefore in a page unrelated to prices. @g123k Am I right?

@teolemon Would that be OK to land just on the generic Smoothie Home page from https://prices.openfoodfacts.org/ as a deep-link?

[g123k]

Currently, GoRouter doesn't provide the subdomain, but I'm pretty sure Android and iOS know it.
There are other dependencies for deep links and I will check if we can get it from the Flutter side.

[monsieurtanuki]

Thank you @g123k for your quick answer!

Probably in that case linking to the home page would be good enough in a first approach.
Accessing the subdomain would be nice, but may not be worth the trouble. Depends on what you find and how easy it is to implement and maintain.