feat: add ClockApp and SettingsPanel components with customizable settings

- Implemented ClockApp component to display time based on user settings.
- Created SettingsPanel for users to adjust clock type, time format, timezone, and theme.
- Added hooks for managing time, settings persistence, and fullscreen functionality.
- Introduced types for clock settings and themes, including default settings.
- Integrated URL parameter parsing for sharing clock configurations.
- Enhanced user experience with loading states and visual transitions.

docker-compose.yml

@@ -0,0 +1,10 @@
+services:
+  clock-app:
+    image: node:21
+    working_dir: /app
+    volumes:
+      - ./:/app
+    command: sh -c "npm install && npm run build && npm start"
+    ports:
+      - "3007:3000"
+    restart: unless-stopped