get more data from data.get_turbine_types()

[mkaut]

The function wpl.data.get_turbine_types() returns only 4 columns from the oedb CSV file.
It would be nice to have an interface to ask for the rest of the data as well.

One can get a bit more data (nominal power and the curves) by creating and querying a WindTurbine object with given turbine_type (and some dummy hub height), but that leaves a lot of unavailable columns.
And weirdly enough, the WindTurbine object does not include manufacturer, which is included in the output of wpl.data.get_turbine_types().