Add "touch" cascade

[quantizor]

Problem description

The library provides a nice and ergonomic way to handle mouse and keyboard-based interactions, but currently there is no support for touch.

Suggested solution

Ideally would love a symmetric API to .click() that triggers the appropriate event cascade for a hypothetical touch user. Perhaps it can be introduced in a piecemeal fashion, since covering the entirety of touch interactions is a bit daunting.

Additional context

No response

[ph-fritsche]

Please have a look at https://testing-library.com/docs/user-event/pointer#moving-a-pointer.

Adding the appropriate touch events is one of the TODOs:

user-event/src/pointer/pointerPress.ts

Line 124 in 7a36ca8

// TODO: touch...

A PR adding the correct behavior or research on what exactly we should implement would be very much welcome.

If the behavior is completely available per pointer API, we can look into which convenience APIs we might want to add for it.