docs: Add docusaurus website

[brooksbecton]

Summary

Add docusaurus website under the /docs folder

Relates to #26

[thymikee]

This is awesome! For now let's not focus on colors/designs, I just want this to be available so we can steadily iterate on the shape of the website. Please address the comments I made and remove any unnecessary code

[thymikee]

Once you rebase to master, you should be good to remove the docs/docs directory and use what's there already

[brooksbecton]

I think it may have to live in a folder. We can rename it to a custom folder though.
https://docusaurus.io/docs/en/site-config#customdocspath-string

Do you know if there is a another way to do it like ya'll want?

[thymikee]

Seeing how we do stuff at Jest repository, how about having this:

docs/
  api.md
website/
  docusaurus taking stuff from `docs/`
...rest

[brooksbecton]

I've moved it around. Can you take a look?

[thymikee]

We'd like this page to be as simple as possible. Like this one: https://linaria.now.sh/. Feel free to discard this comment though, we first need to design it :D. But would be cool if you could remove all the unnecessary stuff and render only HomeSplash

[brooksbecton]

I've commented out the other sections and left in a link the example.md

It now has the website title, slogan, logo, and a button link to an example

[thymikee]

Would be even better if you removed this code, it's gonna be deleted anyway :)

[thymikee]

Can we get rid of package-lock.json? We use yarn in this repo, so it would be preferred to have yarn.lock

[thymikee]

Not sure why CI doesn't kick in, but I think we can get merge it in current shape. Thanks a lot for starting it @brooksbecton! We'll need to tweak the page a little bit more and soon we'll publish it :)