make oembed configurable for additional oembed parameters

[reflexxion]

Many OEmbed providers allow additional query parameters on their oembed services.
So on e.g. instagram there is a parameter for hiding the caption.

hidecaption

With this PR it is easy to configure that option from the outside:

        $embed = new Embed();

        $result = $embed->get('https://www.instagram.com/p/B_C0wheCa4V/');
        $result->getOEmbed()->setQueryParameters(['hidecaption' => true]);
        $code = $result->code;

[oscarotero]

Hi.
Thanks for your contribution. It's a nice feature, but this library have already a way to add settings to the detectors, as you can see here: https://github.com/oscarotero/Embed#settings

So, I'd rather something like this:

$embed = new Embed();

$result = $embed->get('https://www.instagram.com/p/B_C0wheCa4V/');
$result->setSettings([
    'oembed:query_parameters' => ['hidecaption' => true]
]);

$code = $result->code;

In this way, you can configure the settings of all detectors in a single place.

[reflexxion]

Hey @oscarotero ,

oh sure.
I've changed it as proposed by you.

[oscarotero]

Great. Thanks!