feat(jobservice): add pools and workers list commands

[marwan562]

Summary

Implements the first read-only slice of the Jobservice Dashboard from tracker #737 (sub-issue #791).

Adds two missing commands that are currently dashboard-only:

• harbor jobservice pools list
• harbor jobservice workers list

Both are admin-only and reuse the existing go-client jobservice API.

Tracker

• Parent tracker: 📌 Tracker: Remaining CLI Dashboards and Improvements #737
• Sub-issue: [discussion]: Jobservice Dashboard Command #791
• This PR covers the pools/workers discovery part of [discussion]: Jobservice Dashboard Command #791. Queues were already implemented.

Changes

• pkg/api/jobservice_handler.go: add GetWorkerPools() -> GET /jobservice/pools and GetWorkers(poolID) -> GET /jobservice/pools/{pool_id}/workers.
• pkg/views/jobservice/pools/view.go / workers/view.go: table views (POOL_ID HOST PID CONCURRENCY START_AT and WORKER_ID POOL_ID JOB_ID JOB_NAME).
• cmd/harbor/root/jobservice/pools and workers: Cobra parents + list subcommands with --output-format (json/yaml/csv) and error handling via FormatScheduleError for 401/403.
• cmd/harbor/root/jobservice/cmd.go: wire pools and workers into jobservice.

Testing

• gofmt -s -w / go vet ./... / go test ./... pass
• go build and verified: harbor jobservice --help now shows pools and workers

Notes

• No breaking change, no new dependencies.
• Follows existing pattern from queues list.

Refs: #737
Related: #791

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 10.22%. Comparing base (60ad0bd) to head (37ecda4).
⚠️ Report is 223 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1090      +/-   ##
==========================================
- Coverage   10.99%   10.22%   -0.77%     
==========================================
  Files         173      332     +159     
  Lines        8671    16627    +7956     
==========================================
+ Hits          953     1700     +747     
- Misses       7612    14789    +7177     
- Partials      106      138      +32     

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