Upgrade user-event to v14 with setup

[zthxxx]

Introduction of why need setup() method is in https://testing-library.com/docs/user-event/setup

It also brings more variety of useful events: pointer, unhover, copy, cut

Note: user-event setup api is compatible with v13

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[zthxxx]

@yannbf Would you have any suggestions on this?

[yannbf]

Hey @zthxxx thanks for your contribution! This work has actually been done already and unfortunately I had to rollback. It's still available under a beta tag though, and you can read the rationale here.

I'll be closing the PR for now. Please try the beta!
Thank you!