Setup/auto linting

[maxahn]

• this branch contains auto linting for both js, jsx and scss files and will automatically fix the minor ones the linter can handle
• it will only check files that are staged
• the project is full of lint errors though, thus when you make a change to a file with errors and try to commit it, you will likely run into errors
• it is everyone's responsibilities to fix their own lint errors in their files
• many of these errors are due to accessibility issues. we should discuss how much to prioritize this because it is very likely that these errors may block us from progressing
• if you encounter a lint error you think is super dumb, bring it up to the group and we can discuss having that particular error ignored