docs: integrate @nuxt/ui-pro (#739)

Co-authored-by: Pooya Parsa <pooya@pi0.io>
Co-authored-by: Florent Delerue <florentdelerue@hotmail.com>
Co-authored-by: Sébastien Chopin <seb@nuxt.com>

docs/pages/roadmap.vue

@@ -0,0 +1,31 @@
+<script setup>
+const title = 'Roadmap'
+const description = 'Discover our Volta board for @nuxt/ui development status.'
+
+useSeoMeta({
+  title,
+  ogTitle: 'Nuxt UI Roadmap',
+  description
+})
+
+defineOgImage({
+  component: 'Docs',
+  title,
+  description
+})
+
+const appConfig = useAppConfig()
+const colorMode = useColorMode()
+
+const token = 'eyJ2aWV3IjoiYm9hcmQiLCJib2FyZFN0YXR1c2VzIjpbInRyaWFnZSIsImJhY2tsb2ciLCJ0b2RvIiwiaW5fcHJvZ3Jlc3MiLCJpbl9yZXZpZXciLCJkb25lIiwicmVsZWFzZWQiXSwiYm9hcmRMaW5rZWRQcnMiOmZhbHNlLCJsaXN0R3JvdXAiOiJzdGF0ZSIsImxpc3RPcmRlciI6ImNyZWF0ZWRfYXQiLCJ0aW1lbGluZVpvb20iOiJtb250aCIsInRpbWVsaW5lT3JkZXIiOiJzdGF0ZSIsInRpbWVsaW5lRGlzcGxheSI6ImFsbF9taWxlc3RvbmVzIiwiZmlsdGVycyI6e30sIm93bmVyIjoibnV4dCIsIm5hbWUiOiJ1aSJ9'
+
+const src = computed(() => `https://volta.net/embed/${token}?theme=${colorMode.value}&gray=${appConfig.ui.gray}&primary=${appConfig.ui.primary}`)
+</script>
+
+<template>
+  <div class="h-[calc(100vh-var(--header-height)-var(--header-height)-1px)]">
+    <ClientOnly>
+      <iframe :src="src" width="100%" height="100%" />
+    </ClientOnly>
+  </div>
+</template>