Translated READMEs (starting with Turkish)?

[AAB20]

Hi! The README currently points to machine translations on zdoc.app. I'd like to offer a hand-reviewed Turkish README, and ask whether you'd welcome community-maintained README translations in general.

Proposal

• Translations live under docs/i18n/<lang>/README.md (Turkish first: docs/i18n/tr/README.md).
• Each translation names the upstream README commit it was translated from, so readers know when it may be out of date.
• Code blocks, commands, env vars and UI labels stay in English; linked docs stay the English pages.
• The English README gets one link in the existing language bar.

A draft PR with the Turkish version is ready: #1549. I'm happy to keep it in sync. If you'd rather not carry translated READMEs, I'll close the PR. Thanks!

[AAB20]

Added an Arabic README in the same layout, with RTL rendering via <div dir="rtl">: #1551. It overlaps #1549 in README.md and CHANGELOG.md, and I will rebase whichever merges second. Same offer as before: I will keep it in sync, or close it if you would rather not carry translations.