title: How to nested sort in solr query?
body: <p>Assume I have field and value like</p>
  
  <pre><code>Field : value
  sku : xxx
  Seller : true
  Name : "Elux"
  </code></pre>
  
  <p>query will be like </p>
  
  <pre><code>sku:"xxx"
  </code></pre>
  
  <p>within this result I need to sort the products with Name (Elux) in the top with seller (true) top
  and within that I need the products name should be sorted in alphabetical order same goes for seller (false) and Name other than Elux in the bottom. Is this possible with solr?</p>