feat: add landing page components including hero, features, problem, and footer

- Introduced LandingHero component with logo, tagline, and action buttons.
- Created LandingFeatures component to showcase chore system benefits.
- Developed LandingProblem component explaining the importance of a structured chore system.
- Implemented LandingFooter for navigation and copyright information.
- Added LandingPage to assemble all components and manage navigation.
- Included unit tests for LandingHero component to ensure functionality.

.gitignore

@@ -7,3 +7,4 @@ backend/test_data/db/tasks.json
 backend/test_data/db/users.json
 logs/account_deletion.log
 backend/test_data/db/tracking_events.json
+resources/