Add an option for iframe lazyloading

[jimblue]

Support for native iframe lazy loading is now pretty good : https://caniuse.com/loading-lazy-attr

This can be handled with a filter:

$embera->addFilter(static function ($response) use ($loading) {
            if (!empty($response['html'])) {
                $response['html'] = str_replace('<iframe', "<iframe loading=\"{$loading}\"", $response['html']);
            }

            return $response;
});

But IMO, it would be nicer to add a loading option to set this attribute when using autoEmbed(). Everyone should enjoy the joy of iframe lazyloading 😸

[mpratt]

Hi @jimblue Thanks for the suggestion. I'll be adding this as a config option on the next major release of this library.