Feature: #99739 - Associative array keys for TCA items

Description

It is now possible to define associative array keys for the items configuration of TCA types select, radio and check. The new keys are called: label, value, icon, group and description.

Examples:

'columns' => [
    'select' => [
        'label' => 'My select field',
        'config' => [
            'type' => 'select',
            'renderType' => 'selectSingle',
            'items' => [
                [
                    'label' => 'Selection 1',
                    'value' => '1',
                    'icon' => 'my-icon-identifier',
                    'group' => 'default',
                ],
                [
                    'label' => 'Selection 2',
                    'value' => '2',
                ],
            ],
        ],
    ],
    'select_checkbox' => [
        'label' => 'My select checkbox field',
        'config' => [
            'type' => 'select',
            'renderType' => 'selectCheckBox',
            'items' => [
                [
                    'label' => 'My select checkbox field',
                    'value' => '1',
                    'icon' => 'my-icon-identifier',
                    'group' => 'default',
                    'description' => 'My custom description',
                ],
                [
                    'label' => 'My select checkbox field',
                    'value' => '2',
                ],
            ],
        ],
    ],
    'radio' => [
        'label' => 'My radio field',
        'config' => [
            'type' => 'radio',
            'items' => [
                [
                    'label' => 'Radio 1',
                    'value' => '1',
                ],
                [
                    'label' => 'Radio 2',
                    'value' => '2',
                ],
            ],
        ],
    ],
    'check' => [
        'config' => [
            'type' => 'check',
            'items' => [
                [
                    'invertStateDisplay' => true,
                    'label' => 'Click on me',
                ],
            ],
        ],
    ],
],

Impact

It is now much easier and clearer to define the TCA items configuration with associative array keys. The struggle to remember which option is first, label or value, is now over. In addition, optional keys like icon and group can be omitted, for example, when one desires to set the description option.