feat: adding jobservice dashboard feature to cli

[NishchayRajput]

Description

This feature introduces a new Harbor CLI Job Service command group that brings core Job Service Dashboard capabilities into CLI workflows for system administrators.

New top-level command:

• harbor jobservice

High-level goals delivered in this iteration:

1. Expose Job Service monitoring and control operations from CLI.
2. Support queue lifecycle operations with both interactive and non-interactive UX.
3. Add safer action targeting (state-aware pause/resume selection).
4. Support batch queue operations (multi-select and multi-type input).

• Fixes [feature]: Implementing Jobservice Dashboard in CLI #774

Type of Change

1) Root command integration

• Added jobservice into main CLI command tree under System commands.
• Users now discover this feature directly from harbor --help.

2) Worker pools and workers visibility

• harbor jobservice pools list
  • Lists available worker pools.
• harbor jobservice workers list [POOL_ID]
  • Lists workers for a selected pool.
  • Defaults to all pools when POOL_ID is not provided.

3) Queue monitoring and control

• harbor jobservice queues list
  • Lists queue type, pending count, latency, and paused state.
• harbor jobservice queues stop
• harbor jobservice queues pause
• harbor jobservice queues resume

4) Interactive queue selection improvements

Interactive queue action mode is enabled when --type is not provided.

Enhancements added:

• Multi-select picker for queue actions.
• State-aware filtering:
  • resume only shows currently paused queues.
  • pause only shows currently unpaused queues.
  • stop shows all queue types.
• Clear empty-state messages:
  • no paused queues available to resume
  • all queues are already paused

5) Schedules support

• harbor jobservice schedules list --page --page-size
  • Supports pagination and displays X-Total-Count context.
• harbor jobservice schedules status
  • Shows global scheduler paused/running state.
• harbor jobservice schedules pause-all
• harbor jobservice schedules resume-all
  • Implemented via queue action on scheduler type.

6) Job log retrieval

• harbor jobservice jobs log --job-id
  • Fetches and prints plain-text log content for a specific job.

7) API integration layer

Implemented Job Service API wrappers in CLI API layer:

• get worker pools

• get workers by pool

• list job queues

• action pending jobs (stop/pause/resume)

• get job log

• list schedules

• get scheduler paused status

• Bug fix

• New feature

• Refactor

• Documentation update

• Chore / maintenance

Changes

Core command wiring:

• cmd/harbor/root/cmd.go
• cmd/harbor/root/jobservice/cmd.go

Jobservice commands:

• cmd/harbor/root/jobservice/pools/list.go
• cmd/harbor/root/jobservice/workers/workers.go
• cmd/harbor/root/jobservice/workers/list.go
• cmd/harbor/root/jobservice/queues/list.go
• cmd/harbor/root/jobservice/schedules/list.go
• cmd/harbor/root/jobservice/jobs/log.go

API layer:

• pkg/api/jobservice_handler.go

Views:

• pkg/views/jobservice/pools/view.go
• pkg/views/jobservice/workers/view.go
• pkg/views/jobservice/queues/view.go
• pkg/views/jobservice/schedules/view.go