New checkout pull request in worktree option for prs context menu

[SC7639]

I'd like an option to checkout a pr in a worktree, as part of the pr view context menu. e.g.
Checkout Pull Request in worktree.

It would be a useful to for being able to review Colleagues prs without having to find a stopping point to commit my current code or having to deal with merge conflicts when unstashing code. Work trees seem like the perfect way to enable this flow, without headaches.

Thanks :)