- Adds two new crawl finished state, stopped_by_user and
stopped_quota_reached
- Tracking other possible 'stop reasons' in operator, though not making
them distinct states for now.
- Updated frontend with 'Stopped by User' and 'Stopped: Time Quota
Reached', shown with same icon as current partial_complete
- Added migration of partial_complete to either stopped_by_user or
complete (no historical quota data available)
- Addresses edge case in scaling: if crawl never scaled (no redis entry,
no pod), automatically scale down
- Edge case in status: if crawl is somehow 'canceled' but not deleted,
immediately delete crawl object and begin finalizing.
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Co-authored-by: Tessa Walsh <tessa@bitarchivist.net>