fieldset: make v-scope component configurable

exampleSite/content/app/test1.md

@@ -5,7 +5,7 @@ img:
 pageid: test1
 domains: [App]
 topics: [Examples]
-date:   2023-03-02
+date:   2023-03-07
 author: helmutm
 draft:  false
 weight: 10

layouts/shortcodes/pv/debug.html

@@ -1,4 +1,5 @@
 <div v-scope>
+<h3>Debug Information</h3>
 
 <div @vue:mounted="mounted('conf')">
   <div>item id: {| conf.itemid |}</div>

layouts/shortcodes/pv/fieldset.html

@@ -1,4 +1,5 @@
 {{- $name := .Get "name" | default "data" -}}
-<div v-scope="Data('{{ $name }}')">
+{{- $comp := .Get "component" | default "Data" -}}
+<div v-scope="{{ $comp }}('{{ $name }}')">
 	{{ .Inner }}
 </div>