Use `.github` for GitHub templates about carbon

[yeskunall]

Sure thing. This will make the build script a bit more tricky than it is right now, but I'll show you what I guys did in the PR.

Once that's approved, a PR for creating a .github folder will be up as well.

Cheers! ❤️

[yeskunall]

At work. No worries tho, this will definitely have a PR by today evening. Should we also introduce basic templates for issues and PRs?

[jakedex]

Thanks for tackling this one, @yeskunall! I'm definitely on board with adding a .github folder, but I think we want to keep our contributors section in the README.md to make it as visible as possible. I'm all for moving it into a CONTRIBUTORS.md and linking down the road if it gets too cluttered.

See https://github.com/kentcdodds/all-contributors#mandatory

[jakedex]

No rush! And yeah, let's add templates for both.