refactor: enhance UI components with improved styling and layout

- Updated CollectionCard, CountryCard, LodgingCard, NoteCard, RegionCard, TransportationCard, UserCard, and ShareModal components for better visual consistency and responsiveness.
- Introduced hover effects and transitions for a more interactive experience.
- Improved accessibility by ensuring proper alt text for images and using semantic HTML elements.
- Refactored date formatting logic into a utility function for reuse across components.
- Added new translations for profile viewing and joined date in the localization files.

frontend/src/locales/fr.json

@@ -271,7 +271,9 @@
     "timed": "Chronométré",
     "distance": "Distance",
     "all_linked_items": "Tous les éléments liés",
-    "itinerary": "Itinéraire"
+    "itinerary": "Itinéraire",
+    "joined": "Joint",
+    "view_profile": "Afficher le profil"
   },
   "home": {
     "desc_1": "Découvrez, planifiez et explorez en toute simplicité",