Expose CDP in the browser mode

[sheremet-va]

Clear and concise description of the problem

It is very useful to have access to the CDP instance from the browser for library authors to build APIs on top of (see: https://github.com/dmtrKovalenko/cypress-real-events)

Suggested solution

Expose cdp method from @vitest/browser/context that returns an object with three methods:

import { cdp } from '@vitest/browser/context'

await cdp.send('Input.dispatchMouseEvent')

cdp.on('Network.requestWillBeSent', doSomething)
cdp.once('Network.requestWillBeSent', doSomethingOnce)

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[sheremet-va]

Resolved in #5938