Add pre-commit hooks for linting and beautifying

[Anidion]

Add pre-commit hooks (e.g. using husky) to lint and beautify code.
ESLint with Prettier plugin is a good option, but I'm open to any suggestions.
This will ensure that code is consistent across all devs and prevent unnecessary whitespace.

[Anidion]

We should add this to both server and website (if it's not already in the website)