Convert HTML to an array so the Builder can parse it

[Fleuv]

Is your feature request related to a problem? Please describe.
The readability of an array can already become very bad after supplying an array for a component with 2 or more nested children.

Describe the solution you'd like
This can be improved by using a similar approach as React did with the invention of their JSX syntax. Except this time without the use of JavaScript, but instead with PHP.

Acceptance Criteria

• HTML element tags are converted to Element tags.
• HTML Attributes are converted to Element props.
• HTML Children are converted to Element children.

Test case

A HTML parser might accept a string like this:

<article>
  <h1 align="center">Hello World</h1>
  <p>foo bar...</p>
</article>

Which can be converted into an array like this:

[
    [
        'tag' => 'article',
        'children' => [
            [
                'tag' => 'h1',
                'props' => ['align'=>'center'],
                'children' => 'Hello World'
            ],
            [
                'tag' => 'p',
                'children' => 'foo bar...',
            ],
        ],
    ],
];