feat: rewrite to use app config and rework docs (#143)

Co-authored-by: Daniel Roe <daniel@roe.dev>
Co-authored-by: Sébastien Chopin <seb@nuxt.com>

docs/components/content/examples/CommandPaletteExampleModal.vue

@@ -0,0 +1,33 @@
+<script setup>
+const open = ref(false)
+
+const people = [
+  { id: 1, label: 'Wade Cooper' },
+  { id: 2, label: 'Arlene Mccoy' },
+  { id: 3, label: 'Devon Webb' },
+  { id: 4, label: 'Tom Cook' },
+  { id: 5, label: 'Tanya Fox' },
+  { id: 6, label: 'Hellen Schmidt' },
+  { id: 7, label: 'Caroline Schultz' },
+  { id: 8, label: 'Mason Heaney' },
+  { id: 9, label: 'Claudie Smitham' },
+  { id: 10, label: 'Emil Schaefer' }
+]
+
+const selected = ref([])
+</script>
+
+<template>
+  <div>
+    <UButton label="Open" @click="open = true" />
+
+    <UModal v-model="open">
+      <UCommandPalette
+        v-model="selected"
+        multiple
+        nullable
+        :groups="[{ key: 'people', commands: people }]"
+      />
+    </UModal>
+  </div>
+</template>