[JS] New angular directive multiple-input

[TheMaaarc]

['var' => 'col', 'label' => 'Sizes', 'type' => 'zaa-multiple-input', 'options' => [
    [
        'type' => 'zaa-select',
        'var' => 'image',
        'label' => 'Image Selector',
        'options' => [
            ['value' => 1, 'label' => 'Image1.jpg'],
            ['value' => 2, 'label' => 'Image2.jpg'],
        ]
    ],
    [
        'type' => 'zaa-select',
        'var' => 'size',
        'label' => 'Image Size',
        'options' => [
            ['value' => 1, 'label' => 'Big'],
            ['value' => 2, 'label' => 'Small'],
        ]
    ],
]],

Expected Output:

print_r($this->getVarValue('col');

[
    ['image' => 1, 'size' => 2],
    ['image' => 2, 'size' => 2],
]

If type is array, the output should look as followed:

[
    ['image' => 1, 'size' => 2, 'checkboxes' => [1,3,4]],
    ['image' => 2, 'size' => 2, 'checkboxes' => [1,3,4]],
]