RFC: new rule to prefer the usage of screen

It's preferred to use `screen` when using the query functions.

```js
// bad
const component = render()
component.getBy()

// good
screen.getBy()
```

For a first implementation we can verify that the queries used have `screen` as callee.
This doesn't take the following into account, but it makes the rule simpler.

```
const screen = render()
screen.getBy
```
