Extending GUINEA-PIG with EDM4hep output

A key component in future collider studies is simulating the beam-beam interactions and determining the impact of the background. The GUINEA-PIG software simulates the interaction between two ultra-relativistic beams and the possible production of secondary particles A new output interface for GUINEA-PIG was developed in this project, using the EDM4hep data model, allowing the GUINEA- PIG data to be integrated in the key4hep framework and used for many upcoming studies. Using the new form of output is made build-time and run-time optional, as it compliments, but does not replace the original ASCII-based output of GUINEA-PIG.