docs: Explain aggregation & sorting of lists

[cr7pt0gr4ph7]

Extend the documentation about lists to show how to use .list.eval in combination with aggregation functions and sort_by to process the list elements.

Also fixes the objectively false statement [...] we can also use pl.all() to refer to all of the elements of the list..

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.13%. Comparing base (20ebc64) to head (2759a14).
⚠️ Report is 105 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #25260      +/-   ##
==========================================
+ Coverage   81.92%   82.13%   +0.20%     
==========================================
  Files        1712     1714       +2     
  Lines      237225   238960    +1735     
  Branches     3011     3018       +7     
==========================================
+ Hits       194358   196279    +1921     
+ Misses      42094    41905     -189     
- Partials      773      776       +3     

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[cr7pt0gr4ph7]

Note to reviewers: The current build failure is due to unrelated problems being detected by markdown-link-check, and is not related to the changes in this PR, which is ready for review (and potentially merging).

I've created a separate PR #25314 that fixes the link errors.

Update: Link errors should be fixed now that PR #25314 has been merged.

[coastalwhite]

Thank you for the contribution. Small nit.

[cr7pt0gr4ph7]

@coastalwhite Hey, think you could have a look and see if you're satisfied by the new changes? Thanks! :)

[cr7pt0gr4ph7]

The PR is ready to merge on my side, provided there are no other objections/comments.

[cr7pt0gr4ph7]

@c-peters @ritchie46 Any chance of getting this reviewed? :)

[ritchie46]

Thanks @cr7pt0gr4ph7