Transform f1 othr reg liab

[zschira]

Overview

This PR implements transformations for the f1_othr_reg_liab table. This table contains a starting_balance, ending_balance, deltas, and a description and list of account numbers. The description and accounts are very freeform, making it difficult to apply a nice structure to this table. Outside of the unstructured nature of this table, it is very straightforward. All I have done is renaming, unstacking starting/ending balances, and dropping invalid rows.

PR Checklist

• Merge the most recent version of the branch you are merging into (probably dev).
• All CI checks are passing. Run tests locally to debug failures
• Make sure you've included good docstrings.

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[cmgosnell]

one request to rename a column but everything else looks grand (at least grand enough given the messiness of the underlying data!)

[codecov]

Codecov Report

Base: 85.6% // Head: 85.7% // Increases project coverage by +0.0% 🎉

Coverage data is based on head (951cbf7) compared to base (950e74f).
Patch coverage: 100.0% of modified lines in pull request are covered.

Additional details and impacted files

@@          Coverage Diff          @@
##             dev   #2215   +/-   ##
=====================================
  Coverage   85.6%   85.7%           
=====================================
  Files         73      73           
  Lines       8969    8973    +4     
=====================================
+ Hits        7686    7690    +4     
  Misses      1283    1283           

Impacted Files	Coverage Δ
src/pudl/extract/ferc1.py	86.0% <ø> (ø)
src/pudl/metadata/fields.py	100.0% <ø> (ø)
src/pudl/metadata/resources/ferc1.py	100.0% <ø> (ø)
src/pudl/transform/params/ferc1.py	100.0% <ø> (ø)
src/pudl/transform/ferc1.py	95.9% <100.0%> (+<0.1%)	⬆️

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[cmgosnell]

🎉