add mc filter options for XictoL0KPiPi 2015, 2017, and 2018
Add the DaVinci options files for the Xi_c+ -> L0 K- Pi+ Pi-, years 2015, 2017, and 2018.
The retention rates of each are: 2015: 1.11%, 2017: 1.37%, and 2018: 0.31%
Edited by Miguel Rebollo De Miguel