Add Form Input Example

[MentalGear]

Thx for this testing library - the docs are well written, accessibility is a priority and queries well explained.

However, when it comes to the manipulation of form elements, I couldn't find an example or section of it in the docs.

Doing this, for example, works, but gives a typescript error in VSCode

        const firstName = screen.getByRole('textbox', { name: /first name/i })
        firstName.value = 'John Simpleton'

Property 'value' does not exist on type 'HTMLElement'

[timdeschryver]

To interact with elements either use fireEvent or user-event