Add my two plugins, eleventy-plugin-icons and eleventy-plugin-validate

[uncenter]

It worked for reatlat so why not give it a try - @pdehaan any chance you can give this a review when you have a minute?

[Snapstromegon]

I'm not @pdehaan, but I took a look and like what I see, so I'm merging it. Great work @uncenter!

[uncenter]

Thank you so much!