State summary to cs show for group UUIDs

[rmanyari]

Is your feature request related to a problem? Please describe.

It would be great if, when given a group UUID, cs show would break down the job statuses into success/failures.

For example, the current output is:

=== Job Group: e29b4a15-6eb2-4b7b-8d4f-86921708062b (defaultgroup) ===

Cluster             cluster-1               # Completed  52
Host Placement      all hosts               # Running    20
Straggler Handling  none                    # Waiting     0

Maybe something like:

=== Job Group: e29b4a15-6eb2-4b7b-8d4f-86921708062b (defaultgroup) ===

Cluster             cluster-1               # Completed  52 (50 succeeded / 2 failed)
Host Placement      all hosts               # Running    20
Straggler Handling  none                    # Waiting     0

Or

=== Job Group: e29b4a15-6eb2-4b7b-8d4f-86921708062b (defaultgroup) ===

Cluster             cluster-1               # Completed 52
                                              > Succeeded 50
                                              > Failed 2
Host Placement      all hosts               # Running    20
Straggler Handling  none                    # Waiting     0

Up for discussion.

Describe the solution you'd like
See above.

Describe alternatives you've considered
Status quo. Not great.

Additional context
Kudos for @pschorf for the original request.