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/ko.json

@@ -271,7 +271,9 @@
     "timed": "시간이 정해졌습니다",
     "distance": "거리",
     "all_linked_items": "모든 링크 된 항목",
-    "itinerary": "여정"
+    "itinerary": "여정",
+    "joined": "가입",
+    "view_profile": "프로필을 봅니다"
   },
   "auth": {
     "both_passwords_required": "두 암호 모두 필요합니다",