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/zh.json

@@ -319,7 +319,9 @@
     "timed": "时间",
     "distance": "距离",
     "all_linked_items": "所有链接的项目",
-    "itinerary": "行程"
+    "itinerary": "行程",
+    "joined": "加入",
+    "view_profile": "查看个人资料"
   },
   "auth": {
     "forgot_password": "忘记密码？",