Improve action display

[fabienlem]

Short description of what this feature will allow to do:

Today, actions are displayed in a dropdown menu, unless we configure it to be displayed inline.

I suggest to introduce an hybrid mode:

• actions displayed in a drop down menu for medium or large screen resolutions
• actions displayed inline for small screen resolutions

As you can see on the screenshots below, drop down menu does not make sense for small resolutions, as there is a lot of available space to display them. Moreover, it saves one click and accessibility is better on touch screens.

Example of how to use this feature

// MyCrudController.php

    public function configureCrud(Crud $crud): Crud
    {
        return $crud
            ->showResponsiveEntityActions(); // hard to find a good name for this method
    }

It's really minor but it would be a nice improvement.

Thank you.