feat(theme)!: migrate from heroicons to lucide (#2540)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/content/1.getting-started/4.icons.md

@@ -23,7 +23,7 @@ You can use the [Icon](/components/icon) component with a `name` prop to display
 ::component-code{slug="icon"}
 ---
 props:
-  name: 'i-heroicons-light-bulb'
+  name: 'i-lucide-lightbulb'
   class: 'size-5'
 ---
 ::
@@ -38,7 +38,7 @@ ignore:
   - color
   - variant
 props:
-  icon: i-heroicons-sun
+  icon: i-lucide-sun
   variant: subtle
 slots:
   default: Button