Move hard-coded Commercial measures into BuildExistingModel

[asparke2]

There are two measures: add_blinds_to_selected_windows and set_space_type_load_subcategories which are currently hard-coded into the create_osw code. These should be moved into the options_lookup.tsv instead. This will need to be coordinated with ComStock, where the options_lookup.tsv lives.

The corresponding ComStock issue is: https://github.com/NREL/comstock-internal/issues/41

[asparke2]

@rHorsey FYI

[nmerket]

@asparke2 Can we say this is done then?

[asparke2]

@nmerket yep, it's done. Once buildstockbatch is released I'll merge the corresponding ComStock changes.