chore(Collapsible): new component

playground/app.vue

@@ -5,7 +5,7 @@ useHead({
   }
 })
 
-const components = ['button', 'tooltip']
+const components = ['button', 'collapsible', 'tooltip']
 </script>
 
 <template>

playground/pages/collapsible.vue

@@ -0,0 +1,11 @@
+<template>
+  <div class="flex gap-1.5">
+    <UCollapsible>
+      <UButton label="Open" />
+
+      <template #content>
+        <div class="bg-red-500 h-12" />
+      </template>
+    </UCollapsible>
+  </div>
+</template>