Add missing assets and components

components/ui/select/SelectGroup.vue

@@ -0,0 +1,14 @@
+<script setup lang="ts">
+import { SelectGroup, type SelectGroupProps } from 'reka-ui'
+
+const props = defineProps<SelectGroupProps>()
+</script>
+
+<template>
+  <SelectGroup
+    data-slot="select-group"
+    v-bind="props"
+  >
+    <slot />
+  </SelectGroup>
+</template>