Integrate eslint rules on Faency

[seedy]

Goals

• Improve code quality by adding only useful lint rules
• Improve accessibility through a few useful lint rules

Background

Currently we only have prettier, which doesn't bring any "code quality" rules, but only opinionated syntax adjustments.

Description

• integrate with prettier

• unify error/warning for CI/dev: be careful about errors ruining the dev experience

• rules:

  • react-hooks
  • json
  • sort-imports
  • a11y

• see if some rules should be kept or not?

  • https://github.com/typescript-eslint/typescript-eslint/blob/v4.29.0/packages/eslint-plugin/docs/rules/no-empty-function.md

• cleanup existing rules / disabled rules

[seedy]

@matthieuh FYI, I created an RFC issue here, so that we add eslint rules to Faency.
I don't know if we require a discussion before implem, WDYT?