[FR] Add missing translations or improve existing translations for AppFlowy

### Description

Task: Translate AppFlowy into your native language / Improve existing translations

Ways to update translations:
- you can manually edit the JSON translation files in /frontend/appflowy_flutter/assets/translations
- use the [inlang online editor](https://inlang.com/editor/github.com/AppFlowy-IO/AppFlowy)
- or run npx inlang machine translate to add missing translations

Before start working on this issue, you're required to submit a new issue for the language you plan to work on.

### Impact

AppFlowy non-English speaking users

### Additional Context

_No response_