Challenge category & tag pie charts

[bkimminich]

Currently I am running a CTFd instance with all Juice Shop challenges imported to make a screenshot every now and then of the current distribution of challenge categories. This image appears in the eBook as well as the intro presentation slides:

It would be nice to have such a pie chart on https://stats.owasp-juice.shop instead. The necessary data should be pulled from https://github.com/OWASP/www-project-juice-shop/blob/master/_data/challenges.yml - that copy of the challenges.yml from the Juice Shop main repo is updated automatically on every release.

Another chart showing challenges by their tags would also be nice to have. Important: Other than with categories challenges can have multiple tags!

[bkimminich]

Both the category and tag information from that https://github.com/OWASP/www-project-juice-shop/blob/master/_data/challenges.yml is already read and presented in tabular form here: https://owasp.org/www-project-juice-shop/#div-challenges - The pie-chart presentation with % instead of absolute numbers would be a nice extra general information plus a screenshot source for the ebook and intro slide deck.

[the-pro]

I got something like this. Is this the correct distiribution

[bkimminich]

Google has a wonky way of ordring the slices, but the Top 5 match in % value at least. Well done! 👍