Expose setter for TargetInfo type

[elliette]

See puppeteer/puppeteer#9371 for context and more details.

Ideally this is something that should be fixed by Puppeteer. Currently the only way to use Puppeteer to interact with a Chrome DevTools panel added by a Chrome Extension is to set the TargetInfo's type to be a page. I've opened up puppeteer/puppeteer#9371 in Puppeteer itself to request official support for this use case.

In the meantime, would it be possible to expose a setter (alongside the type getter) to allow clients to coerce the type of a Target?

[xvrh]

@elliette feel free to open a pull request with your idea. I don't see any problem with this if it enable new use cases.

[elliette]

@elliette feel free to open a pull request with your idea. I don't see any problem with this if it enable new use cases.

Thanks! I opened #202