Add endpoint for getting all pull requests that I'm a reviewer on across multiple repos

Issue #18014 new
Tim Ellis
created an issue

Similar to this endpoint however instead of all pull requests authored by {target_user} it would return all pull requests that {target_user} is a reviewer on. I'm not sure if this endpoint already exists. I tried searching the docs and these issues but couldn't find anything. This would prevent me from needing to manually provide each repo then querying each repo's pullrequest endpoint and filtering (which should also reduce some server load as it would only be one request instead of multiple).

Perhaps an endpoint like:

/2.0/pullrequests/{target_user}/reviewer

or a filter query parameter like

/2.0/pullrequests/{target_user}?kind=reviewer

Or something similar.