Support canceling all workflows runs

### Describe the feature or problem you’d like to solve

Cancelling all runs for all workflows
Cancelling all runs for 1 workflow

Related to https://github.com/cli/cli/issues/3775

### Proposed solution

Like `gh run cancel all`
or
`gh run cancel name-of-workflow` where it would find all the runs for this workflow and cancel them

### Additional context

This would be particularly useful when there is a long queue and would a lot better than trying to click manually through the paginated UI.