Convert epacems_to_parquet command to run dagster asset

[bendnorman]

PR Overview

The epacems_to_parquet command calls pudl.etl.etl_epacems which is no longer a thing in the dagster-asset-etl branch. This PR replaces the call to pudl.etl.etl_epacems with the execution of a dagster job that just runs the hourly_emissions_epacems asset. This command still expects the epacamd_eia and plants_entity_eia tables to be in pudl.sqlite. The pudl_sqlite_io_manager will throw errors if the tables don't exist in the database.

I'd like to hold on on merge this into dagster-asset-etl until we can get the CI passing in #2299 and merged into this branch.

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.
• For major data coverage & analysis changes, run data validation tests
• Include unit tests for new functions and classes.
• Defensive data quality/sanity checks in analyses & data processing functions.
• Update the release notes and reference reference the PR and related issues.
• Do your own explanatory review of the PR to help the reviewer understand what's going on and identify issues preemptively.

[jdangerx]

I know we're not merging until the tests are in, but figured I would approve this now so we can just merge when the time comes.

[jdangerx]

Ah! I found the message you were talking about @bendnorman ! How helpful :)

[codecov]

Codecov Report

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

Coverage data is based on head (4a29245) compared to base (8dfef94).
Patch coverage: 66.6% of modified lines in pull request are covered.

Additional details and impacted files

@@                Coverage Diff                @@
##           dagster-asset-etl   #2300   +/-   ##
=================================================
  Coverage               85.7%   85.7%           
=================================================
  Files                     79      79           
  Lines                   8906    8906           
=================================================
+ Hits                    7633    7637    +4     
+ Misses                  1273    1269    -4     

Impacted Files	Coverage Δ
src/pudl/convert/epacems_to_parquet.py	84.0% <66.6%> (+17.3%)	⬆️
src/pudl/io_managers.py	93.9% <66.6%> (-1.0%)	⬇️

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