Fast track: implement the final design

[g123k]

Hi everyone,

When a product isn't in the database, we have a dedicated screen to allow input values.
Hovewer this is not the design that's on Figma.

Basically, the single page should be split into three: taking photos / nutriscore / ecoscore.
To access this screen:

1. Scan a non-existing barcode (eg: this one)
2. Tap on 'Add product information'

Here is the expected design:

[surajitbasak]

Can I take that issue?

[surajitbasak]

Hey @g123k This issue-related PR number is #4698 ready for Review