Add caprieval_rank to hover text in scatter and box plots

[SarahAlidoost]

You are about to submit a new Pull Request. Before continuing make sure you read the contributing guidelines and that you comply with the following criteria:

• You have sticked to Python. Please talk to us before adding other programming languages to HADDOCK3
• Your PR is about CNS
• Your code is well documented: proper docstrings and explanatory comments for those tricky parts
• You structured the code into small functions as much as possible. You can use classes if there is a (state) purpose
• Your code follows our coding style
• You wrote tests for the new code
• tox tests pass. Run tox command inside the repository folder
• -test.cfg examples execute without errors. Inside examples/ run python run_tests.py -b
• PR does not add any dependencies, unless permission granted by the HADDOCK team
• PR does not break licensing
• Your PR is about writing documentation for already existing code 🔥
• Your PR is about writing tests for already existing code

---

closes #665, please see my comment that shows the hover text including caprieval_rank.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.33 ⚠️

Comparison is base (b361ef7) 74.73% compared to head (bcad4ad) 74.41%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #666      +/-   ##
==========================================
- Coverage   74.73%   74.41%   -0.33%     
==========================================
  Files         111      111              
  Lines        7644     7642       -2     
==========================================
- Hits         5713     5687      -26     
- Misses       1931     1955      +24     

Impacted Files	Coverage Δ
src/haddock/libs/libplots.py	96.72% <100.00%> (-0.03%)	⬇️

... and 3 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[SarahAlidoost]

@mgiulini and @amjjbonvin can you please review this pull request?

[amjjbonvin]

Very nice and useful!

[mgiulini]

well done, thanks!