docs(playground): update vue template to script setup

Author: brandyscarney

_templates/playground/new/vue.md.ejs.t

@@ -7,15 +7,8 @@ to: "<%= `static/usage/v${version}/${name}/${path}/vue.md` %>"
   <<%= component %>></<%= component %>>
 </template>
 
-<script lang="ts">
+<script setup lang="ts">
   import { <%= pascalComponent %> } from '@ionic/vue';
-  import { defineComponent } from 'vue';
-
-  export default defineComponent({
-    components: {
-      <%= pascalComponent %>,
-    },
-  });
 </script>
 <% if (css){ -%>