Add a UUID type that is physically represented as an 128bit fixed sized binary. The addition of the type should add the annotation that a value in this column is a UUID. The important benefit would be that in the native language object models we could return the respective UUID class, e.g. java.util.UUID in Java and uuid.UUID in Python. For reference, Postgres and Parquet both have a UUID type as well do other data system have this small specialization.