Geant4InputAction: move EventReader creation to begin run, so we have the run info at this point for example

because the ASCII reader does not parse the run info when not reading a full event, we open the file, skip an event (which makes it read the run info), and then close and open again

we can just concatenate the strings like this. or better use textwrap.dedent and multiline strings.

Everywhere but in Meta, where we want to allow adding arbitrary information

DDSim: OutputConfig: add forceLCIO, forceEDM4HEP, forceDD4HEP flags to force a specific output plugin

Move configuration to OutputConfig