shinyglass 0.1.0

• Initial release.
• glass_theme() returns a bslib theme with Liquid Glass styling for shiny apps: translucent surfaces, backdrop blur, soft depth, and system typography.
• Light and dark presets, with options for accent color, blur, saturation, and corner radius.
• Works with fluidPage(), navbarPage(), bslib::page_sidebar(), and other page functions that accept a bslib theme. Pass the theme via theme = glass_theme(), or for teal apps via options(teal.bs_theme = glass_theme()).
• Styles common Bootstrap and Shiny surfaces (cards, navbars, sidebars, inputs, tables, plots, modals) and holds up on denser UIs such as leaflet maps, DT, shinyWidgets, bs4Dash, and teal filter panels.