Modify execute_DAG with unitresult caching

[IAlibay]

Cache a JSON of each successful ProtocolUnitResult, allowing for execute_DAG to resume when called over a DAG that hasn't been fully executed.

Checklist

• Added a news entry

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• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[IAlibay]

pre-commit.ci autofix

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.89%. Comparing base (a88ba26) to head (5982414).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #738      +/-   ##
==========================================
+ Coverage   98.87%   98.89%   +0.01%     
==========================================
  Files          42       42              
  Lines        2669     2703      +34     
==========================================
+ Hits         2639     2673      +34     
  Misses         30       30              

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[atravitz]

note: I'm taking this PR over from @IAlibay. In gufe devs meeting, we discussed needing to handle the case where a DAG A -> B -> C has a failure in B, such that both B and C are re-run.

[mikemhenry]

LGTY! Just had some ideas on logging/testing but overall looks great!

[IAlibay]

Overall it looks good, but I'm having trouble working out what the side-effect is of only popping parents from a dictionary.

[IAlibay]

lgtm!

[github-actions]

No API break detected ✅