Feature branch: per-app language preferences

[nbradbury]

This is the feature branch for per-app language preferences. All code has been reviewed in previous PRs, but a quick test is still recommended:

• Run on an Android 13+ device
• Go to App Settings
• Change the language
• Verify the change is reflected in the UI
• Force quit and restart the app and verify the language change is still reflected
• Do the same on a pre-13 device

[dangermattic]

	3 Warnings
⚠️	strings.xml files should only be updated on release branches, when the translations are downloaded by our automation.
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.4% Duplication on New Code

See analysis details on SonarQube Cloud

[ParaskP7]

👋 @nbradbury !

Quick question, because I'll be off on AFK from Monday, actually approaching EOD atm, do you need that merged today? 🤔

FYI: I am asking that because it would be valuable for someone other than me to review this final merge to trunk, just so that gets some additional set of eyes on it. Otherwise, I can just proceed with the testing part, just one more time, and approve it to unblock the merge, without much reviewing (did all the reviews in the previous PRs anyway).

[nbradbury]

@ParaskP7 If possible, it would be best to get this merged today as I'm AFK all of next week. But perhaps after this is merged, then next week @jkmassel could give testing changing language a spin?

[ParaskP7]

Noted @nbradbury , I'll then test this once more in about an hour (or so) and then (most probably) approve it too (✅), I am sure there are no changes between this and the previous PR we were working on just few minutes ago. 😊

[ParaskP7]

👋 @nbradbury !

I have reviewed (quickly again) and tested this (once more), everything works as expected, a great great job well done, kudos! 🚀 x 🚀 ^ 🚀

So much code removed, love it! ❤️