Implement spindle config, list, and logs commands
- Add spindle field to Repository struct
- Implement update_repo_spindle() to enable/disable CI for repos
- Implement list_pipelines() to fetch pipeline records from PDS
- Add Pipeline, TriggerMetadata, TriggerRepo, and Workflow structs
- Implement spindle config command:
- Enable/disable spindle for a repository
- Support custom spindle URL via --url flag
- Update repo record's spindle field
- Implement spindle list command:
- List all pipeline runs for a repository
- Display trigger kind, repo, and workflows
- Implement spindle logs command:
- Stream logs from a workflow execution via WebSocket
- Support both full job_id format (knot:rkey:name) and short format (name)
- Add --lines and --follow flags for log control
- Add WebSocket dependencies: tokio-tungstenite and futures-util
- Keep spindle run as stub (to be implemented later)