Basic scripts

Add basic scripts to run GiBUU and generate KM3NeT files.

scripts/runner.py

@@ -44,7 +44,7 @@ def main():
     interaction = "CC" if args["--CC"] else "NC"
     flavour = "electron" if args["--electron"] else (
         "muon" if args["--muon"] else "tau")
-    target = (args["--target-a"], args["--target-z"])
+    target = (args["--target-z"], args["--target-a"])
 
     jc = generate_neutrino_jobcard(events,
                                    interaction,