feat(footer, header, landing): enhance UI components and improve navigation

- Updated Footer component with new links and dynamic year display.
- Refactored Header component to improve mobile navigation and theme toggling.
- Enhanced DonationSection and Features components with improved layout and animations.
- Updated HowItWorks and Impact sections for better user engagement and clarity.
- Improved product page layout and error handling in API interactions.
- General UI refinements across various components for a cohesive user experience.

public/manifest.json

@@ -10,7 +10,7 @@
   "lang": "pt-BR",
   "icons": [
     {
-      "src": "/favicon.ico",
+      "src": "/icon.png",
       "sizes": "any",
       "type": "image/x-icon"
     },