Add code to Cev paper

[github-actions]

Fixes #518

This is an automated PR adding a new publication to the website.

T Manz, F Lekschas, E Greene, G Finak, N Gehlenborg. "A General Framework for Comparing Embedding Visualizations Across Class-Label Hierarchies", IEEE Transactions on Visualization and Computer Graphics 1-11 (2024)

Please review the changes and address the remaining <TODO>s in the file.

You can use the GitHub CLI to pull down this branch and make changes:

# Check out the PR
gh pr checkout <PR number>
# Make changes
git add .
git commit -m "Update manz-cev-2024.md"
git push