expand the command for managing pull requests

[gomaltao]

I would like to see commands for approving pull requests. I would also like to see commands for reply on comments. I would like to see commands for approving pull requests. I also would like to see commands for maniging comments so they can be replied on or be resolved.

[atbagga]

@gomaltao Command to approve a Pull request already exists.
Checkout the command - az repos pr set-vote -h

We do not have functionality to manage comments on the Pull Request and hence keeping this issue open and adding it our backlog.