Resolve conflict in electron/i18n.ts by keeping both `ar` (from main) and `vi` (from this branch). Also add `vi` to SUPPORTED_LOCALES in src/i18n/config.ts so Vietnamese is selectable in the language picker.
- Added Japanese (ja-JP) translations for common, editor, dialogs, launch, settings, shortcuts, and timeline.
- Updated translations for existing locales (en, es, fr, ko-KR, tr, zh-CN, zh-TW) to include new keys for "showInFolder", "loadingVideo", "trim", and "speed".
- Refactored VideoEditor and timeline Item components to utilize localized strings for various user interface elements and notifications.
- Enhanced user experience by providing localized messages for project loading, exporting, and timeline actions.
Luca Fontanot