Add OSM/Geospatial dependencies as default

[nreinicke]

Previously we only had the OSM/Geospatial dependencies required in the conda install but now that we're adding default functionality that use these dependencies (osmnx, geopandas, etc.), I've included them as required dependencies in the pyproject.toml file.

[robfitzgerald]

Oh, seeing this one now. I'm not sure I agree with the idea of making these required. Perhaps they could be a feature install, and that feature is the default, but can be deactivated? Osmnx is a heavy weight dependency and it's not actually a requirement for all downstream compass applications (same goes for all of these geospatial libs)

[nreinicke]

Yeah that's a good point and I like the idea of making the geospatial libraries optional. Then for type checking we can do:

from typing import TYPE_CHECKING

if TYPE_CHECKING:
  import osmnx

[jhoshiko]

Discussed this with Nick in person and am approving this change.