Feat/eslint

[johnpyp]

Description

Adds eslint to consistently format codebase and enforce code quality in various areas.

Fixes #378

Motivation and Context

There was inconsistent code style and some bad practices throughout the codebase. This change attempts to solve that with stricter linting and formatting requirements.

Type of change

• [ x] Bug fix (non-breaking change which fixes an issue)

[johnpyp]

Up to date with the current development branch.

Includes:

• Airbnb eslint config
• Prettier with eslint integration (via prettier eslint config)
• All components now have type validation (enforced by eslint)
• Various package upgrades, such as react-scripts, react and redux ... and other more minor changes

Other changes that could either go into this PR or a new one:

• Cleaning up naming, such as the issue right now where resource describes many different things, including the plural (array) and singular version of it.
• Upgrading the rest of the packages to, ideally, the latest version
• Cleaning up messy or bad code patterns
• Using functional components when possible

[davidholyko]

i think its good to go. there are some small things here and there that we can break into smaller PRs for the future but this is a big step in the right direction

[johnpyp]

Awesome. It would be cool if we could get this merged into development before the next meeting, because other changes or PRs made before then will have a lot of merge conflicts to deal with.

[davidholyko]

i would ping raj and have him approve/merge it in

[johnpyp]

Sounds good. @RajChaudhry Do you think this is good to merge?

[johnpyp]

Added lint-staged and husky to fix #388

[johnpyp]

Added trailing commas to prettier config (already present in airbnb config, but was overridden by the prettier eslint plugin).

[RajChaudhry]

Shit forgot to write comments before merging, but the linting looks great! Thanks for setting it up JP!