Refactor Home and Preview pages for improved data handling and UI components

- Updated Home.svelte to streamline app data initialization and reactivity.
- Removed unnecessary intervals and checks for app data updates.
- Enhanced data binding for logos, view modes, and themes.
- Simplified the structure of the Header and Footer components.
- Introduced CardList and CardSquare components for better logo display.
- Improved routing with a NotFound page for unmatched routes.
- Added a RouteHeader component for search functionality and theme switching.
- Enhanced styling for better user experience across components.

src/router.js

@@ -1,8 +1,11 @@
+// Import pages for routing
 import Home from './pages/Home.svelte';
 import Preview from './pages/Preview.svelte';
+import NotFound from './pages/NotFound.svelte';
 
-// Define all routes for the application
+// Define routes
 export const routes = {
   '/': Home,
-  '/preview/:id': Preview
+  '/preview/:logoName': Preview,
+  '*': NotFound
 };