Now that #985 is out- lets discuss the enum based schema:

1. What name would you give it
2. Which of the following two versions would you prefer:
   a) Similar to the AbbreviatedUnitsConverter: {"Value" : 1.2, "Unit": "Milligram", "Type": "Mass"}
   b) Similar to the UnitsNetIQuantityJsonConverter: {"Value" : 1.2, "Unit": "MassUnit.Milligram"}