Adding eslint for code inspection

[cdfa]

I think we should consider adding eslint to the development workflow, since it provides value code inspection about possible bugs and misuse of packages, like React hooks with the new eslint-plugin-react-hooks (I just updated dependencies and noted this, so that's why I'm writing this now).

NOTE: There are ways to disable eslint's formatting warnings to be handled by prettier.

[Riscky]

I'm defs in favour, the more we check before deploying the better