## Issue #19: Implement Internationalization (i18n)

### Description

Implement internationalization support to make the helpyourneighbour application available in multiple languages.

### Acceptance Criteria

- [ ] Choose and configure i18n library
- [ ] Add language selection functionality
- [ ] Translate all user-facing text
- [ ] Implement locale detection
- [ ] Document i18n setup

### Tasks

- [ ] Install and configure i18next or similar library
- [ ] Create language files for supported languages
- [ ] Add language switcher UI component
- [ ] Implement automatic locale detection
- [ ] Translate all application text

### Notes

This issue addresses the need to make the application available in multiple languages. The implementation will include choosing an i18n library, creating language files, adding a language switcher UI, and implementing automatic locale detection to provide a localized experience for users.