[Dev Improvement] Implement Prettier

[spen]

Prettier is a tool to use in JavaScript projects to help keep code style clean and consistent.
No rush for this one, but let's install it here once we get going :)

[SandyWyper]

I think it's installed globally on my computer. Is this something that should only live in dev dependencies on a per project basis?

[spen]

For now, the global install is totally fine, but it's best that we hook it up on a project level too, just so we're working from the same set of configs :)

[SandyWyper]

OK. I'll get it on it 👍