Missing rho- definition in PDGDatabase class

[tbhayward]

There is no rho- definition in the common-tools/clas-physics/.../PDGDatabase class, https://github.com/JeffersonLab/coatjava/blob/development/common-tools/clas-physics/src/main/java/org/jlab/clas/pdg/PDGDatabase.java. Proposal to add:

particleMap.put(-213, new PDGParticle("rho-", -213, 0.7754, -1));