Add Gutenberg mobile strings for translation

[Tug]

This PR manually adds the strings that needs to be translated in gutenberg-mobile to Resources/en.lproj/Localizable.strings which will thus be added to the WordPress iOS glotpress project.

[wpmobilebot]

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[koke]

The strings look good but let's leave the .gitattributes thing from 7cae164 out of this PR.

[Tug]

@koke I reverted that commit.

Could you check that it works on your side, it seems to be failing when I run python Scripts/localize.py now with the following error:

Error: input files have invalid format. old: /Users/tug/Work/Automattic/WordPress-iOS/WordPress/Resources/en.lproj/Localizable.strings.old, new: /Users/tug/Work/Automattic/WordPress-iOS/WordPress/Resources/en.lproj/Localizable.strings.new

Even though the file seems to be OK:

> plutil -lint WordPress/Resources/en.lproj/Localizable.strings 
WordPress/Resources/en.lproj/Localizable.strings: OK

[koke]

I'm seeing

Bad entry in file ./Classes/ViewRelated/Post/PostSettingsViewController.m (line = 1244): Argument is not a literal string.
Error: input files have invalid format. old: /Users/koke/a8c/WordPress-iOS/WordPress/Resources/en.lproj/Localizable.strings.old, new: /Users/koke/a8c/WordPress-iOS/WordPress/Resources/en.lproj/Localizable.strings.new

Which looks like a bad call to NSLocalizedString introduced a month ago.

@wordpress-mobile/platform-9 I'm now surprised that this hasn't been a problem in the previous releases since that change was introduced for 11.7.

@Tug I think the file itself is valid, but the localize.py script expects a comment above each translation

[loremattei]

which looks like a bad call to NSLocalizedString introduced [a month ago]

Yes! I saw it yesterday @koke and I'm setting up a PR to fix it.

I realised that the script prints a warning without returning an error in this case. Since the script is now automatically run as a part of the code_freeze lane, the warning may go unnoticed in the long log that's produced.
I'm also updating the code_freeze lane to prevent this kind of issues in the future.

[loremattei]

The changes here look good to me. 👍

[peril-wordpress-mobile]

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