first version of a run script for the CP Algorithms

This MR introduces a first version of a run script for the CP algorithms. This first version only works in EventLoop, and only implements the basic/core functionality. This will be followed by further MRs that add more options, as well as an Athena version. At the AMG meeting it was requested that we follow such an iterative approach.

For this first version the important parts are that we get the name of the options and the script right, as well as the general calling convention. As we'll likely have to extend and change the implementation in further MRs to support more options, please focus implementation comments on fundamental changes that really need to be addressed in this MR.