Add wastewater data to pyrenew_hew_data

[sbidari]

Added prep_ww_data.py: extracting, cleaning, and preprocessing NWSS data.
Updated prep_data.py: incorporate wastewater data into the training data.
Updated pyrenew_hew_data.py: downstream processing of wastewater data.
Added a test in test_pyrenew_hew_data.py
Misc:
Renamed some variables in the wastewater model for clarity.
Standardized date handling using datetime.date.

To do: Update path for NWSS data

[codecov]

Codecov Report

Attention: Patch coverage is 59.72222% with 58 lines in your changes missing coverage. Please review.

Project coverage is 28.83%. Comparing base (026f1eb) to head (71bde69).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pipelines/prep_ww_data.py	0.00%	37 Missing ⚠️
pyrenew_hew/pyrenew_hew_data.py	86.17%	13 Missing ⚠️
pipelines/forecast_state.py	0.00%	7 Missing ⚠️
pipelines/prep_data.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #317      +/-   ##
==========================================
+ Coverage   26.86%   28.83%   +1.96%     
==========================================
  Files          24       25       +1     
  Lines        1768     1897     +129     
==========================================
+ Hits          475      547      +72     
- Misses       1293     1350      +57     

Flag	Coverage Δ
hewr	35.35% <ø> (ø)
pipelines	14.06% <10.00%> (-0.77%)	⬇️
pyrenew_hew	37.62% <86.17%> (+7.25%)	⬆️

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[dylanhmorris]

This is looking very good, thanks @sbidari! A few questions and suggestions.

[damonbayer]

Thanks @sbidari! I left many comments. After you respond, I would like to review the whole PR again, as it was a bit much to do at one time.

[damonbayer]

Thanks @sbidari! Please address a few remaining comments.

[dylanhmorris]

Merging in the CI fix so we can check that the pipeline runs.