Description

Migrate pipeline commands form Cobra to Kong CLI.

Changes

• Moved pkg/cmd/pipeline/*.go -> cmd/pipeline/*.go (not every file got detected as moved in PR view, though. git diff main..feat/kong_pipeline_cmd_SUP-5744 --find-renames=10 might provide better diff).
• Migrated 5 subcommands: create, list, migrate, validate, view
• Removed interactive prompts (survey package) in favor of required flags
• Removed pipeline command delegation from legacy Cobra system

Enhancements

• Cluster name resolution: --cluster-id flag now accepts either cluster names or IDs
  • Example: -c "my-cluster" or -c "cluster-uuid-123"
  • Provides helpful error message listing available clusters if not found
• Better error handling: 422 errors now check for existing pipelines and show their URLs
• Cleaner output: Spinner clears lines after completion

Testing

• Tests have run locally (with go test ./...)
• Code is formatted (with go fmt ./...)
• Linter passes (with golangci-lint run)
• Manual testing of cluster name resolution
• Manual testing of error handling for duplicate pipeline names

Disclosures / Credits

Massive thanks to @JoeColeman95 for paving road for the Cobra -> Kong migration 👏