Feature: #79341 - TCA richtext configuration in config section

See Issue #79341

Description

A new config setting enableRichtext has been introduced. It enables richtext editing on the text field and replaces the old setting defaultExtras.

Impact

Setting enableRichtext will result in the text field being rendered with a richtext editor. Config example:

'columns' => [
    'content' => [
        'config' => [
            'type' => 'text',
            'enableRichtext' => true,
        ],
    ],
];