Add the new front page

[presi300]

Summary by CodeRabbit

• New Features

  • Introduced a new section with the catchphrase "write once, access anywhere" and export button.
  • Added a final section with a heading and call-to-action button.
  • Implemented responsive image rendering based on screen size and theme.
  • Displayed showcase images with text and a responsive layout.
  • Added components for rendering specific text content.
  • Introduced a section displaying technology icons and an open-source message.
  • Added versatile button components with customizable properties.
  • Implemented a footer section with copyright information.
  • Created components for feature boxes and a grid layout.
  • Added a theme switcher for toggling between light and dark modes.
  • Introduced a top navigation bar with dynamic appearance based on scroll position.

• Enhancements

  • Updated the homepage layout with new components and improved styling.
  • Added new CSS classes for custom shadow effects.
  • Extended Tailwind CSS configuration with new screen sizes and color palettes.

• Dependency Updates

  • Removed several @tiptap-pro extensions.
  • Added @tiptap/extension-code-block-lowlight, @tiptap/extension-image, and @tiptap/extension-link.