Add ParticleID::isQuark method
Adds method ParticleID::isQuark
that returns true
if the absolute ID of the particle is less than 11. Also updates a test to print the value of this property, and adds a reference file for that test.
These changes represent my proposal for fixing LHCBPS-1718. (I'll create a separate MR in Analysis for Phys/DaVinciMCTools if this is approved.)
/cc @gcorti @gligorov (as cc'd in the issue) and @ibelyaev (as the author of the test)