title: Symfony Easyadmin - How to add a custom action near "btn action-new"?
body: <p>I would like to add a custom action near " btn action-new" in list page.
  I try:</p>
  
  <pre><code>entities:
      Pratiquant:
          class: AppBundle/Entity/Pratiquant
          actions:
              - {name: 'fichePresence',  type: 'method', action: 'fichePresence', label: 'fiche de presence' }
  </code></pre>
  
  <p>I don't need this:</p>
  
  <pre><code>entities:
      Pratiquant:
          class: AppBundle/Entity/Pratiquant
          list: 
              actions:
                  - {name: 'fichePresence',  type: 'method', action: 'fichePresence', label: 'fiche de presence' }
  </code></pre>
  
  <p>Hope someone understand me!</p>