Ability to add external assets

[husseinalhammad]

At the moment it is not possible to add external assets.

This would be handy when using third-party libraries such as Google Maps API or when loading resources from a CDN. Otherwise you would need to have Pinion add the internal files while you add the markup for the external ones yourself.

Current:

<script src="https://www.google.com/recaptcha/api.js"></script>
<script src="https://maps.googleapis.com/maps/api/js"></script>
<?php perch_get_javascript(['cache-bust' => true]); ?>

Desired is something like:

perch_get_javascript([
    'cache-bust' => true,
    'external' => [
        'https://www.google.com/recaptcha/api.js',
        'https://maps.googleapis.com/maps/api/js'
    ]
]);