test(study_locus) credible_set_qc step integration test

[project-defiant]

✨ Context

The CredibleSetQC step required tests to see if it works correctly.

🛠 What does this PR implement

Tests

• Test for main functionality (repartition credible set after distributed batch jobs to predefined number of partitions).
• Test for checking if the functionality outputs correctly credible sets with pValue lower then threshold.
• Test for checking if the functionality outputs correctly credible sets with purityR2 higher then threshold.
• Test for deduplication of the credible sets, while preserving the credible set with highest LogBF.

Minor changes

• changed hardcoded study locus qc value to it's label, so concurrent updates of the value do not affect the step.
• Save the dataset after qc step with the StudyLocus object to enforce the schema.
• Added hydra step config .

docs

• Added documentation of CredibleSetQCStep.

🙈 Missing

🚦 Before submitting

• Do these changes cover one single feature (one change at a time)?
• Did you read the contributor guideline?
• Did you make sure to update the documentation with your changes?
• Did you make sure there is no commented out code in this PR?
• Did you follow conventional commits standards in PR title and commit messages?
• Did you make sure the branch is up-to-date with the dev branch?
• Did you write any new necessary tests?
• Did you make sure the changes pass local tests (make test)?
• Did you make sure the changes pass pre-commit rules (e.g poetry run pre-commit run --all-files)?

[Daniel-Considine]

Looks all good to me 👍