Add edit and delete actions for license packages:
- Edit button (pencil icon) opens edit form with all package fields
- Delete button (trash icon) with confirmation dialog
- Edit form includes active/inactive toggle
- Routes: GET/POST /licenses/packages/{id}/edit, POST /licenses/packages/{id}/delete
Ref #239
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>