Security analysis API

The class is an implementation of the interface that detects security violations by running load-flows after applying each contingency. This implementation can be very slow if the contingency list contains a lot of contingencies, thus triggering a lot of load-flow computations, but it has the advantage of only requiring a com.powsybl.loadflow.LoadFlow. The default loadflow implementation is used, see loadFlow for details about how default implementation is determined.