Added test data for precipitation

[sarasita]

Added monthly precipitation data for tests. The files were generated using cdo remapbil,r20x20 /net/atmos/data/cmip6-ng/pr/mon/g025/pr_mon_IPSL-CM6A-LR_historical_r1i1p1f1_g025.nc /home/scsarah/mesmer/tests/test-data/calibrate-coarse-grid/cmip6-ng/pr/mon/g025/pr_mon_IPSL-CM6A-LR_historical_r1i1p1f1_g025.nc

• Closes #xxx
• Tests added
• Fully documented, including CHANGELOG.rst

[veni-vidi-vici-dormivi]

Looks good, you could rename the folder and file start from pr to precip, that would make it a little clearer.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.43%. Comparing base (32f11c0) to head (b860f26).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #590   +/-   ##
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  Coverage   78.43%   78.43%           
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  Files          49       49           
  Lines        3056     3056           
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  Hits         2397     2397           
  Misses        659      659           

Flag	Coverage Δ
unittests	78.43% <ø> (ø)

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[sarasita]

Looks good, you could rename the folder and file start from pr to precip, that would make it a little clearer.

I would try and avoid renaming variables given 'pr' is the name consistent with the CMIP6 standard output variable names (https://pcmdi.llnl.gov/mips/cmip3/variableList.html) and the documentation of the Brunner et al input dataset (https://lukasbrunner.github.io/publications/Brunner2020.pdf)

[veni-vidi-vici-dormivi]

If you don't want to have to pull the precommit bot changes you can run pre-commit run --all-files locally 🤗

[mathause]

Or install the pre-commit hooks (pre-commit install) which will then be automatically applied before committing (you may have to git add the changed files). Or manually run ruff check --fix .; black . before git add which will fix 99% of the issues addressed in the pre-commit hook (which is what I do).