[Meta] Automatic String Organization

[JPKribs]

Summary

Adds a step at the beginning of the build process that alphabetizes localizations.

The changes localizations in this commit were re-alphabetized by this new Swift Script. I think Swift and Python have different Alphabetization methods but if we're just using this by default, the Swift method should be used.

Finalizes #1362 and hopefully resolves #518

This script only comments & alphabetizes strings. This step does not validate whether a String is used in the project. I can add that step in as well if we want it but I do think there are some unused strings that are good to keep. A good example is Experimental since we're not using it now but may want to use it in the future.

If we want to remove unused strings, I can add it via another script if we like this script process!

[LePips]

The automatic removal during the build phase isn't correct because it removes strings before they can even be used. I think I ideally want a job on GitHub that can detect unused strings and comment on PRs.

However, having the script around is still useful to run every once in a while.

For the scripts they don't need to run every time and only when en.lproj/Localizable.strings changes. However, even though I've followed the instructions at the section below the script still runs on every build. It's fine for now since these take < 0.5s on my machine.

• https://developer.apple.com/documentation/xcode/improving-the-speed-of-incremental-builds#Declare-inputs-and-outputs-for-custom-scripts-and-build-rules

[JPKribs]

The automatic removal during the build phase isn't correct because it removes strings before they can even be used. I think I ideally want a job on GitHub that can detect unused strings and comment on PRs.

Sounds good! I probably wont take a crack at that one (at least for now) since Git is still a pretty weak skill for me. I'm fine with just the Alphabetizing for now since that should handle the primary duplicate entries + organization issues. Unused localized isn't that bad IMO since there are some items worth keep localized even if we aren't using them: (Eg, WIP, Experimental, etc.).

I'll let you make the call for whether or not this closes out #518!