title: Add Neos Fusion rendered markup snippet to the elasticseach index
body: <p>I asked myself if it is possible to customize the indexing of the Nodes so that we can put a rendered markup snippet to the node in Elasticsearch. So that we have in ES a property that contains the rendered Fusion snippet.</p>
  <p>Is that already possible? I know that we can create custom indexer.
  <a href="https://github.com/Flowpack/Flowpack.ElasticSearch.ContentRepositoryAdaptor#indexing-configuration-per-property" rel="nofollow noreferrer">https://github.com/Flowpack/Flowpack.ElasticSearch.ContentRepositoryAdaptor#indexing-configuration-per-property</a></p>
  <p>Maybe that would be a Solution.</p>