Improve visual comparison with Venn diagrams

[GwennyGit]

As currently implemented, Venn diagrams are suitable for visually comparing identifier overlaps in the fields Pathways, Metabolites and Reactions of a model. However, an UpSet plot might be more feasible for more than four models.
On this website here, the UpSet plots are shown and explained.
Packages for Python also exist: https://upset.app/implementations/#python-libraries

Also, adding a possibility for the user to specify a colour list for the Venn diagrams would be great.
(Maybe this could also be added for the bar charts/statistics charts. 🤔)