Allow scripts tag to be identified by id attribute

[jguittard]

Using scripts view helper (headScript or inlineScript), id attribute is ignored when generating scripts tags.

protected $optionalAttributes = [
    'charset',
    'crossorigin',
    'defer',
    'async',
    'language',
    'src',
];

Can be useful to target some scripts blocks with an html id attribute

[jguittard]

Allowed by $this->headScript()->setAllowArbitraryAttributes(true);