Started working on a implementation where you can perform your own checks

Think modules that check if there's still a ssl handshake going on.
Persistent connections that simply send a keep alive message and check if
you get an answer.

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>
Actually implement module loading and using, no samples yet though

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>
Added an openssl sample module

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>