Document codegen CLI options

[gordonwatts]

Summary

• document both list and flush subcommands in CLI docs
• explain that flush clears cached code generator data

Testing

• make -C docs html

Note

Feel free to ignore this if the codegen command sub-commands are going to be removed!

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https://chatgpt.com/codex/tasks/task_e_6872679b43788320a7379247937197a5

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.61%. Comparing base (188c034) to head (f7251c1).
Report is 10 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #616      +/-   ##
==========================================
+ Coverage   96.50%   96.61%   +0.11%     
==========================================
  Files          29       29              
  Lines        1974     2068      +94     
==========================================
+ Hits         1905     1998      +93     
- Misses         69       70       +1     

Flag	Coverage Δ
unittests	96.61% <ø> (+0.11%)	⬆️

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[ponyisi]

@gordonwatts OK with this change?

[gordonwatts]

@gordonwatts OK with this change?

I am not sure what you mean by this!

[ponyisi]

I added a commit which removed documentation for one subcommand which was deleted

[gordonwatts]

@ponyisi what would you like to do with this? Close it? Merge it?

[ponyisi]

I want to merge it, I just want to make sure you're happy with the change