…itineraries

…ew create form

…neraries, ScrollTopButton components with icons and preview data

- Implemented CreateForm for itinerary creation with theme selection and password protection.
- Added FeatureCard for displaying features with icons.
- Created Footer with links to documentation and GitHub.
- Developed PreviewCarousel for displaying itinerary previews.
- Introduced RecentItineraries component to show recently visited itineraries.
- Added ScrollTopButton for easy navigation.
- Created various icon components (IconAirplane, IconBolt, IconBook, IconGitHub, IconLink, IconPalette, IconPhone) for UI consistency.
- Added preview data for sample itineraries.

…out options and theme colors

… itineraries

… and date display

…utton

…tumn preview details

… appeal

…el, and RecentItineraries components

…llTopButton components

…eatureCard component

…tandard-autumn preview

…ponent

…l effect

…d trail effect

…nced return animation