Features to add

[MikeJohnPage]

• [x] Basic inputs: https://shiny.posit.co/r/gallery/widgets/widget-gallery/
• [x] bslib dashboard - consider template presets
  • [x] cards
  • [x] Value boxes
  • [x] tooltips
  • [x] popovers
  • [x] Dashboard with sidebar
  • [x] Multipage app
• [x] loading spinners/modals
  • [x] Shiny withProgress
  • [x] waiter package
• [x] logos (shiny)
• [x] tables (dt vs reactable vs gt)
• [x] plots (histogram, scatter, bar, line) - use viridis colours
• [x] leaflet