BUG: pkg_resources is depreciated for Python 3.12

[erexer]

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• I have confirmed this bug exists on the latest version of cerf.

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Code Sample

Running tutorial.ipynb using Python 3.12.7.

import cerf

Problem description

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[1], line 1
----> 1 import cerf

File ~/<path>/cerf/.venv3.12.7/lib/python3.12/site-packages/cerf/__init__.py:1
----> 1 from .package_data import *
      2 from .model import *
      3 from .outputs import *

File ~/<path>/cerf/.venv3.12.7/lib/python3.12/site-packages/cerf/package_data.py:2
      1 import os
----> 2 import pkg_resources
      4 import yaml
      5 import pandas as pd

ModuleNotFoundError: No module named 'pkg_resources'

Python 3.12 doesn't support pkg_resources and has moved to setuptools, we should migrate.

Expected Output

no error