Add support callable protocols for instance factory dependency injection

[mauvilsa]

What does this PR do?

Fixes #755

Before submitting

• Did you read the contributing guideline?
• Did you update the documentation? (readme and public docstrings)
• Did you write unit tests such that there is 100% coverage on related code? (required for bug fixes and new features)
• Did you verify that new and existing tests pass locally?
• Did you make sure that all changes preserve backward compatibility?
• Did you update the CHANGELOG with the pull request link? (not for typos, docs, test updates, or minor internal changes/refactors)

[mauvilsa]

@E1k3 please try this out to help identify issues and possible edge cases. Later I will probably add more tests and will update the documentation.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (0177681) to head (ae39652).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #758   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           22        22           
  Lines         6895      6920   +25     
=========================================
+ Hits          6895      6920   +25     

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[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mauvilsa]

@E1k3 I have now added documentation changes and one more test.

[mauvilsa]

Merging this. Anyway people can comment here, and if there is a need to fix, then it can be done in a separate pull request.

[E1k3]

@E1k3 please try this out to help identify issues and possible edge cases. Later I will probably add more tests and will update the documentation.

Wow that was fast. I was on vacation until today, but I will use this feature in my code and also maybe try some more obscure use cases and let you know if I run into any problems.

Thank you for your work! Jsonargparse might be the best part about working with Lightning for me and will probably also replace standard argparse in most of my personal projects in the future.