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.

frontend/package-lock.json

@@ -35,6 +35,7 @@
         "@gltf-transform/cli": "^4.3.0",
         "@vitejs/plugin-vue": "^5.2.4",
         "assert": "^2.1.0",
+        "google-translate-api-x": "^10.7.2",
         "sass": "^1.98.0",
         "stream-browserify": "^3.0.0",
         "util": "^0.12.5",
@@ -3736,6 +3737,20 @@
       "dev": true,
       "license": "Apache-2.0"
     },
+    "node_modules/google-translate-api-x": {
+      "version": "10.7.2",
+      "resolved": "https://registry.npmjs.org/google-translate-api-x/-/google-translate-api-x-10.7.2.tgz",
+      "integrity": "sha512-GSmbvGMcnULaih2NFgD4Y6840DLAMot90mLWgwoB+FG/QpetyZkFrZkxop8ZxXgOAQXGskFOhGJady8nA6ZJ2g==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/AidanWelch"
+      }
+    },
     "node_modules/gopd": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",