CLIC dataset study: status=1 and status=0 particles in showers

[jpata]

Study the CLIC datasets (.root files) in detail to understand what is happening in the cases:

• status=1 particle leaves hits directly
• status=1 particle does not leave hits directly, but only through status=0 children

Datasets from: https://zenodo.org/records/8260741

• https://zenodo.org/records/8260741/files/p8_ee_tt_ecm380_10files.tar?download=1
• https://zenodo.org/records/8260741/files/p8_ee_WW_fullhad_ecm380_10files.tar?download=1