Add HardScatterParticles into the EXOT8 Derivation
Adds HardScatterParticles and HardScatterParticlesAux. to the EXOT8 Derivation output DAOD file. Run over 100 events, these two new branches increased the output file size from 5,939,616 Bytes to 5,953,883 (5.664 MB to 5.678 MB, a 0.24% size increase).