feat(i18n): add French language support and enhance localization

- Introduced French as a supported language across the application, updating locale files and adding translations for various components.
- Enhanced language handling logic to accommodate French, ensuring proper detection and fallback mechanisms.
- Updated UI elements to include French language options, improving accessibility for French-speaking users.
- Refactored SEO handling to include French in hreflang links, enhancing search engine indexing for multilingual content.
- Added new scripts for managing French translations and ensuring consistency across language files.

backend/utils/initializeTypes.js

@@ -67,7 +67,7 @@ const initializeTypes = async () => {
     }
     const valuesList = {
         gender: ['male', 'female', 'transfemale', 'transmale', 'nonbinary'],
-        language: ['de', 'en', 'ceb', 'es'],
+        language: ['de', 'en', 'ceb', 'es', 'fr'],
         eyecolor: ['blue', 'green', 'brown', 'black', 'grey', 'hazel', 'amber', 'red', 'other'],
         haircolor: ['black', 'brown', 'blonde', 'red', 'grey', 'white', 'other'],
         hairlength: ['short', 'medium', 'long', 'bald', 'other'],