rabbitmq-c: add recipe

rabbitmq-c is a C library providing an implementation of AMQP client for
use with v2.0+ of the RabbitMQ broker

Signed-off-by: Maciej Borzecki <maciej.borzecki@open-rnd.pl>
Signed-off-by: Maciek Borzecki <maciek.borzecki@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>