Added php-amqplib support

I've added support of https://github.com/videlalvaro/php-amqplib, and also config for ssl. Note that at the moment, pecl-amqp didn't support ssl
meh, I think this is gonna be fine for now, as it means that at least all the providers supported by swarrot bundle (and also those registered as `swarrot.factory.<something>`, even in other bundles) can be easily registered.

the thing with the tag is just a little more advanced and does not limit the other bundles to use specifically this syntax. Hence, I think you can leave it like that, as it should be fine for now.