CLI: Scaling configuration CRUD

[plutopulp]

Pull request outline

Checklist:

• [ ] Docs updated
• [x] Version bumped

Added: CLI CRUD commands for interacting with scaling configurations. New commands:

• pipeline create scalings [-h] [--type TYPE] [--args ARGS] [--min-nodes MIN_NODES] [--max-nodes MAX_NODES] name
• pipeline get scalings [-h] [--name NAME] [--skip SKIP] [--limit LIMIT]
• pipeline edit scalings [-h] [--type TYPE] [--args ARGS] [--min-nodes MIN_NODES] [--max-nodes MAX_NODES] name
• pipeline delete scalings [-h] name

[linear[bot]]

PC-994 Scaling config CRUD in CLI