add up to 10 teirs

[ghost]

pls 10

[SuperFola]

You can add more tiers by tweaking https://github.com/SuperFola/TierListMaker/blob/master/assets/js/tier-table.js as well as the corresponding CSS

I'm open to PRs to make this more modular, but I feel like this project is finished, and I don't have much allocated free time for it alas