Implement a comprehensive remote API for all Quadlet operations, enabling programmatic management of Quadlet units via the Podman REST API. This will allow remote clients to create, modify, query, and delete Quadlet configurations.

This story involves:

• Designing and implementing remote API endpoints for Quadlet operations
• Supporting CRUD operations for Quadlet units via REST API
• Creating a design document outlining the API structure and endpoints
• Updating documentation to describe the remote Quadlet API
• Adding tests to validate remote Quadlet API functionality

Reference: Podman 6 High Level Design