fix: not working language selection

[VaiTon]

Also a general refactor to use kotlin inline for building things.

Closes #3540.
Closes #3437.

Tasks:

• 🐛 Login header crashing the app
• NPE while trying to edit #4196

Test APK

https://github.com/openfoodfacts/openfoodfacts-androidapp/suites/3615337385/artifacts/87373606

[teolemon]

@VaiTon just tested the build, it works. Nice touch with the icon 👍

[teolemon]

I found this one, just after login: https://sentry.io/organizations/openfoodfacts/issues/2608035872/?project=5276851&query=is%3Aunresolved

[teolemon]

Also closes #3437

[teolemon]

Not sure if the issue was introduced in this PR, but I spotted that. The photo is not uploaded, and no animation
https://user-images.githubusercontent.com/1689815/131176570-2a029f06-891f-4939-aab2-ea7a6485ff60.mp4

[VaiTon]

Not sure if the issue was introduced in this PR, but I spotted that. The photo is not uploaded, and no animation
https://user-images.githubusercontent.com/1689815/131176570-2a029f06-891f-4939-aab2-ea7a6485ff60.mp4

Try to re-scan the product

[VaiTon]

I found this one, just after login: https://sentry.io/organizations/openfoodfacts/issues/2608035872/?project=5276851&query=is%3Aunresolved

Idk what's causing this. Investigating right now

[teolemon]

It pretends to have uploaded the image, but nothing, not even the first one this time :-/

[teolemon]

I found this one in the branch as well. Not sure if related to your changes: #4196. Happens on trying to edit a product

[teolemon]

New artefact: https://github.com/openfoodfacts/openfoodfacts-androidapp/suites/3623909306/artifacts/87647039

[teolemon]

@VaiTon LGTM 👍 ✅

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
4 Code Smells

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0.8% Duplication