✨ Admin UI for new Workstream model

[Jerryescandon]

✨ Feature

We updated the workstream model in #7574. Now we need a way for admins to manage them.

🕵️ Details

Admin pages (using our new patterns) for workstream including:

• Work stream index table (URL: /admin/settings/work-streams)
• Create work stream page
• Work stream information page (static)
• Edit work stream information

🎨 Design

Link to figma file by @Jerryescandon

✅ Acceptance Criteria

• [ ] Work stream index table page (URL: /admin/settings/work-streams)
• [ ] Create work stream page
• [ ] View Work stream page (Advanced Tools tab out of scope)
• [ ] Edit work stream information page,

🛑 Blockers

### Blocked By
- [ ] #7574

[github-actions[bot]]

Status: Blocked :x:

Issues blocking this PR:

• 7574 :x:

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  This comment was automatically written by the Blocking Issues bot, and this PR will be monitored for further progress.