feat(rust): Add and test DataFrame equality functionality

[Kevin-Patyk]

Final pull request needed to resolve #21388. Tagging @coastalwhite because he is overseeing my work on this.

As with the previous pull request for adding assert_series_equal(), there are in-line comments where I felt unsure and some guidance might be needed and where changes are marked, meaning they deviate from the Python code (the reason is outlined in the change). Like before, once comments are added and resolved, I will add proper documentation and examples to the code via a new commit.

Any suggestions for shortening and making the code more efficient are welcome. Thank you!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.69%. Comparing base (ee0903b) to head (f7b05e0).
Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #22865      +/-   ##
==========================================
- Coverage   81.02%   80.69%   -0.34%     
==========================================
  Files        1674     1671       -3     
  Lines      237087   221446   -15641     
  Branches     2792     2791       -1     
==========================================
- Hits       192098   178693   -13405     
+ Misses      44320    42088    -2232     
+ Partials      669      665       -4     

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[coastalwhite]

apart from the .schema everything seems. I would really like to see a follow-up PR where the python assert_frame_equal dispatches to this 😄

[Kevin-Patyk]

Made the change to .schema() and added proper documentation. Once this is merged, we can close the issue related to moving this functionality 🎉! For the follow-up PR where the Python assert_frame_equal() dispatches to this, do you want me to make a formal issue that I can be assigned to or is it not necessary?

[coastalwhite]

For the follow-up PR where the Python assert_frame_equal() dispatches to this, do you want me to make a formal issue that I can be assigned to or is it not necessary?

It is not really necessary. Thank you for PRs 😄