Add Swahili (sw) Language Support

[shalini-saloni]

Summary

This enhancement adds Swahili (Kiswahili) language support to DrawDB, expanding the application's accessibility to Swahili-speaking users across East Africa and beyond.

Motivation

DrawDB currently supports 47 languages, making it accessible to users worldwide. Adding Swahili will:

• Extend support to over 200 million Swahili speakers globally
• Improve accessibility for users in Kenya, Tanzania, Uganda, and other East African countries
• Continue DrawDB's mission of being a truly international database design tool

Proposed Implementation

The implementation follows the existing i18n pattern:

1. Create locale file: src/i18n/locales/sw.js

   • Contains all 284+ translation keys
   • Includes language metadata (name, native_name, code)
   • Follows the same structure as existing locale files

2. Update i18n configuration: src/i18n/i18n.js

   • Import Swahili locale
   • Add to languages array
   • Register in i18n resources

3. Language metadata:

   • Code: sw
   • Name: Swahili
   • Native Name: Kiswahili
   • Direction: LTR (Left-to-Right)

Testing

• Language appears in the language selector
• UI elements display Swahili translations correctly
• Language preference persists across sessions
• Application builds without errors

Related Files

• src/i18n/locales/sw.js (new)
• src/i18n/i18n.js (modified)

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Note: This follows the contribution guidelines outlined in CONTRIBUTING.md and maintains consistency with the existing codebase.enhancement