Linting and Formatting

[wilwade]

Review Note: I split this into different commits so it would be easy to review that which wasn't automatically applied.

I suggest reviewing those commits instead of every line.

Problem

Styles and potential issues were all over without enforcing linting and formatting.

Closes: #34

Solution

Added linting and formatting.

Change summary:

• Added eslint
• Added Prettier
• Checked to make sure it was setup in CI

Steps to Verify:

1. npm i
2. npm run lint
3. npm run format
4. npm run lint:fix