Add Portland and Tualatin basin data and polygons

Once CSV and GeoJSON files received, clean up and add to model.

Update taper depth scaling.

added 2023 ERF labels

assigned to @jaltekruse

changed title from Add Portland Tualatin basin data and polygons to Add Portland and Tualatin basin data and polygons

changed milestone to %Finalize draft NSHM 2023

changed the description

Resolved in !51 (merged)
Updating depth taper scaling moved to ghsc/nshmp/nshmp-lib#177

closed