title: Flutter: Sort, Drag and Drop between multiple lists or columns
body: <p>I've been researching some list sorting libraries like <code>flutter_list_drag_and_drop</code>, <code>reorderable_list</code>, <code>flutter_reorderable_list</code>, <code>dragable_flutter_list</code>, and others, but all work with only one list.</p>
  
  <p>What I'm wanting to do can be understood in the image below, which is exactly what the Trello app has.</p>
  
  <p>Any library suggestions or how to do this?</p>
  
  <p><img src="https://s3-sa-east-1.amazonaws.com/sabesim-kanban-img/trello.gif" alt="Drag and Drop"></p>