feat(v2): Add i18n default code translation bundles

[slorber]

Motivation

For strings hardcoded in a theme (like "next"/"previous" pagination labels), we can pre-translate them in the current locale so that the user does not have to.

These "provided translation bundles" serve for 2 things:

• init the files with fallback messages when using docusaurus write-translations --locale fr
• fallback message values when running docusaurus start --locale fr even if fr/code.json does not exist

Test Plan

Tests

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Size Change: +14 B (0%)

Total Size: 156 kB

ℹ️ View Unchanged

Filename	Size	Change
website/build/assets/css/styles.********.css	17.6 kB	0 B
website/build/assets/js/main.********.js	109 kB	+14 B (0%)
website/build/blog/2017/12/14/introducing-docusaurus/index.html	21.7 kB	0 B
website/build/docs/introduction/index.html	180 B	0 B
website/build/index.html	6.95 kB	0 B

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Deploy preview for docusaurus-2 ready!

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⚡️ Lighthouse report for the changes in this PR:

Category	Score
🟠 Performance	87
🟢 Accessibility	96
🟢 Best practices	100
🟢 SEO	100
🟢 PWA	95

Lighthouse ran on https://deploy-preview-4215--docusaurus-2.netlify.app/classic/

[lex111]

Awesome!

Can we do extract messages for translation from attributes like aria-label?
Also can we take into account subthemes like docusaurus-theme-search-algolia (eg it contains input placeholder text "Search").

[slorber]

I'll have to complete all the missing translations and things we can translate, but here it's mostly the infrastructure.

Providing exhaustive aria label translations and other language fallback translations can probably be made in other PRS

[lex111]

Ah, got it, so if wrap other raw strings in the translation API functions, then they will be accessible to extract?

[slorber]

Yes. There's a translate() fn for aria attributes Le jeu. 11 févr. 2021 à 20:10, Alexey Pyltsyn <notifications@github.com> a écrit :

…

Ah, got it, so if wrap other raw strings in the translation API functions, then they will be accessible to extract? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#4215 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAFW6PWKD6FMU7SPTZVRKY3S6QTQXANCNFSM4XPFRGQA> .

[lex111]

Great, thank you! I'll make other raw strings translatable in the next PR.