Use official typings for `react-cookie`

## requirements
`react-cookie` is about to add official typings to their lib: https://github.com/reactivestack/cookies/pull/124.

As soon as they merge and publish them, we should remove our `react-cookie.d.ts` in favour of them

## specs
remove `react-cookie.d.ts` and update `react-cookie` to the version with TS typings

## misc
{optional: other useful info}
