Add creation of atom names to generateTopologyFromOEMol if atom names are blank; also check for unique atom names.
Add creation of atom names to generateTopologyFromOEMol if atom names are blank; also check for unique atom names.

open-forcefield-group/openforcefield,openforcefield/openff-toolkit,open-forcefield-group/openforcefield,openforcefield/openff-toolkit,open-forcefield-group/openforcefield