Support EventListener for toggleFeatured

[rabauss]

What would be the best way to support Eventlistener for toggleFeatured?

Unfortunately, you need a table class and cannot use a EventListener at this point:

contao/core-bundle/src/Resources/contao/classes/Ajax.php

Line 394 in f90453d

$dca = new $dc->table();

Can we use the button_callback of the feature operation in the DCA or can we introduce a new event that the EventListener can listen to?

EDIT:
This is related to: contao/core#1414
The solution with event listener could also get used for #1465 instead of table class

[rabauss]

Okay, thanks to @aschempp I will solve it with contao-haste (https://github.com/codefog/contao-haste/blob/master/docs/Dca/index.md).

So I don't need to investigate for a reusable solution from the core ;-)