Adding add_coords function

[zaxtax]

This adds the add_coords function so that coords can be updated without needing to explicitly mentioning a model

Checklist

• [x] Make sure that the pre-commit linting/style checks pass.
• [x] Are the changes covered by tests and docstrings?
• [x] Fill out the short summary sections 👇

New features

• Add a new function

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:books: Documentation preview :books:: https://pymc--7037.org.readthedocs.build/en/7037/

[codecov[bot]]

Codecov Report

Merging #7037 (58c03e8) into main (915e6a2) will increase coverage by 0.00%. The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7037   +/-   ##
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  Coverage   92.16%   92.16%           
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  Files         101      101           
  Lines       16827    16830    +3     
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+ Hits        15509    15512    +3     
  Misses       1318     1318           

Files	Coverage Δ
pymc/model/core.py	91.78% <100.00%> (+0.03%)	:arrow_up:

[ricardoV94]

Would something that can also update existing coords be more useful? Perhaps named set_coords?

[zaxtax]

Would something that can also update existing coords be more useful? Perhaps named set_coords?

Maybe, but updating coords likely would require something like the tricky shape-checking logic in set_data. Is there a use-case you have in mind for set_coords?