Setup lint-staged (closes #23)

[NDOY3M4N]

In addition to prettier I also added lint-staged to the list of dependencies (along with eslint and a bunch of prettier and eslint plugins). Basically what lint-staged does is that it will run before the commit process. By doing so you can ensure no errors go into the repository and enforce code style.

List of commits:

• ➕ :: add prettier and eslint to the project
• 🔧 :: set some defaults for prettier and eslint
• 🎨 :: let prettier format all the files
• this should fail
• ➕ :: add husky and lint-staged
• 🔧 :: configure husky and lint-staged
• 🔧 :: run prettier as an eslint rule
• 🧪 :: test lint-staged