add: content-pages plugin

app/pages/wissen/[slug].vue

@@ -0,0 +1,19 @@
+<script lang="ts" setup>
+const slug = useRoute().params.slug
+const { data: post } = await useAsyncData(`wissen-${slug}`, () => {
+  return queryCollection('wissen').path(`/wissen/${slug}`).first()
+})
+</script>
+
+<template>
+  <template v-if="post">
+    <ContentRenderer :value="post" />
+  </template>
+  <template v-else>
+    <section class="Legal flex-col gap-default content full">
+      <h1>Page Not Found</h1>
+      <p>Oops! The content you're looking for doesn't exist.</p>
+      <NuxtLink to="/">Go back home</NuxtLink>
+    </section>
+  </template>
+</template>