title: Symfony 4 easy admin how to create common action?
body: <p>How to create common action like 'new' which will be do one action, for example send ajax request for get some kind of information.
  I'm trying add action via config/packages/easy_admin.yaml</p>
  
  <pre><code>easy_admin:
    entities:
      Users:    
        list:
          actions:
            - { name: 'refresh', label: 'Refresh', icon: 'sync' }
  </code></pre>
  
  <p>But it's add 'refresh' link for each row in my list.</p>
  
  <p>I will be grateful for example or link on information.</p>