C analyser is now working

Signed-off-by: Robin Jarry <robin.jarry@ablogix.fr>
Refactored cli stuff. Added extension point for language analysers CLI arguments.

Signed-off-by: Robin Jarry <robin.jarry@gmail.com>
Fixed C analyser (now takes system include paths into account)

Signed-off-by: Robin Jarry <robin.jarry@gmail.com>