Describe the feature or problem you’d like to solve

I'd love to see a way to delete PR and issue comments with the CLI.

This previous issue highlighted some questions/friction around a potential delete --id 1234 type command, which I think are valid concerns.

I'd like to propose an ability to delete comments by building off of the existing behavior of --edit-last

Proposed solution

gh [issue|pr] comment --edit-last --delete or gh [issue|pr] comment --delete-last

This command would remove the last comment made by the CLI user, similar to how --edit-last works.

• This would benefit users by offering some type of comment delete functionality in the CLI, while avoiding the complexity/uncertainty of having to discover a comment ID to supply to the delete command.
• This would align with existing behavior (--edit-last flag)

Additional context

I don't think this would totally solve all the requests for a "delete comment" type command. It may solve a portion of them (e.g. use cases that leverage CI bots to leave comments) - maybe that is an acceptable compromise.