Add 2005, 2006 and 2007 years

[rouille]

Purpose

Allow to run pipeline for years 2005, 2006 and 2007. Closes CAR-4211.

Add missing typehints and add/format docstrings in all functions located in the load_data and download_data modules.

What the code is doing

• Print a warning message and return download_data.download_raw_eia923 instead of raising an error for years < 2008
• Updates reference tables to add the SC energy source code that is used for years < 2008 in place of SGC

Testing

Run 2005, 2006 and 2007 pipelines successfully.

Where to look

• the download_data.download_raw_eia923 where we warn the file is not available and return
• the load_data.load_pudl_table where a warning is added if the table is empty
• the 2 reference tables (CSV files) where we added information for the SC energy code.

Usage Example/Visuals

From log file:

2024-05-17 11:21:37,194 [WARNING] oge.oge.download_data:313 EIA-923 data is unavailable for 2006.
...
2024-05-17 11:22:32,070 [INFO] oge.data_pipeline:169 3. Cleaning EIA-923 data
2024-05-17 11:22:33,969 [WARNING] oge.oge.load_data:670 denorm_boiler_fuel_monthly_eia923 is empty
2024-05-17 11:22:34,136 [WARNING] oge.oge.load_data:670 denorm_generation_monthly_eia923 is empty
2024-05-17 11:22:34,660 [WARNING] oge.oge.load_data:670 boiler_generator_assn_eia860 is empty

Review estimate

2 min if you don't pay attention to added/formatted docstrings. 20min otherwise

Future work

Add information in the plant attributes file.

Checklist

• [ ] Update the documentation to reflect changes made in this PR The README will be added in a separate PR before merging the historical_coverage_feature branch into development
• [x] Format all updated python files using black
• [x] Clear outputs from all notebooks modified
• [x] Add docstrings and type hints to any new functions created