docs(select-menu): update

docs/app/components/content/examples/select-menu/SelectMenuItemsChipExample.vue

@@ -0,0 +1,41 @@
+<script setup lang="ts">
+const items = ref([
+  {
+    label: 'bug',
+    value: 'bug',
+    chip: {
+      color: 'red' as const
+    }
+  },
+  {
+    label: 'enhancement',
+    value: 'enhancement',
+    chip: {
+      color: 'blue' as const
+    }
+  },
+  {
+    label: 'feature',
+    value: 'feature',
+    chip: {
+      color: 'violet' as const
+    }
+  }
+])
+const selected = ref(items.value[0])
+</script>
+
+<template>
+  <USelectMenu v-model="selected" :items="items" class="w-40">
+    <template #leading="{ modelValue, ui }">
+      <UChip
+        v-if="modelValue"
+        v-bind="modelValue.chip"
+        inset
+        standalone
+        :size="ui.itemLeadingChipSize()"
+        :class="ui.itemLeadingChip()"
+      />
+    </template>
+  </USelectMenu>
+</template>