feat: honor keyboardState in pointer events

[malipramod]

• @testing-library/user-event version:

"@testing-library/jest-dom": "^5.11.9",
"@testing-library/react": "^11.2.2",
"@testing-library/user-event": "^12.8.3",

• Testing Framework and version:
• DOM Environment:

Relevant code or config

What you did:

fireEvent.keyDown(element, { key: "Control", code: 17, charCode: 17 })
fireEvent.click(element);
fireEvent.keyUp(element, { key: "Control", code: 17, charCode: 17 })

What happened:
Doesn't recognize the keyboard event

Reproduction repository:

Problem description:
How to perform a ctrl+click or cmd+click with fireEvent or userEvent?

Suggested solution:

[ph-fritsche]

fireEvent.click(element, {ctrlKey: true}) // for just the click event
// or
userEvent.click(element, {ctrlKey: true}) // for hover, mousedown, mouseup...

Currently we don't support passing a keyboardstate to the mouse event simulations.
We might add a shared state in the future as discussed in #703

[malipramod]

@ph-fritsche Thank you! This worked! Feel free to close this.