feat: Add Docker support and improve API structure

- Introduced Dockerfile and .dockerignore for containerization.
- Removed unused API route `src/app/api/hello/route.ts`.
- Added new API route for fetching products by category.
- Enhanced existing product category API to include descriptions.
- Updated product categories data structure to include descriptions.
- Improved product fetching logic in the product categories page.
- Refactored breadcrumb component for better navigation.
- Added new AchievementIconWhite component for UI consistency.
- Updated Navbar to use routeFactory for better maintainability.
- Enhanced styling in various components for improved responsiveness.
- Removed obsolete language switcher component.

.dockerignore

@@ -0,0 +1,4 @@
+
+node_modules
+npm-debug.log
+.next/cache