Mouse handling

[ivanvanderbyl]

Add support for interacting with Puppeteer Mouse events. This is required for handling drag & drop, sliders, and hover interactions.

Describe the solution you'd like

Mouse events, especially hover events, are quite verbose, I would suggest we support something which takes ...events as an input of 1 or more events.

Example:

await browser.mouse.down(x,y)
await browser.mouse.up(x,y)

// only send movement
await browser.mouse.move(x1, y2, x2, y2, ..., xn, yn)

// initiate a drag with `mousedown`, `mousemove1`, `mousemove2`, `mouseup`
await browser.mouse.drag(x1, y2, x2, y2, ..., xn, yn)

[ivanvanderbyl]

Closed by #46