As an API Owner or Platform Engineer, I need to create and manage API Products in the Developer Portal (RHDH/Backstage plugin), so that I can expose APIs with associated rate limiting plans and documentation for application developers to discover and consume.

Acceptance Criteria

 - API Owners can create API Products that reference existing HTTPRoutes configured in the cluster
 - API Products display associated PlanPolicy information (available tiers, rate limits,
  descriptions)
 - API Owners can configure API Product metadata (display name, description, documentation links, tags), which results in Backstage API catalog entities
 - API Owners can set approval mode (manual/automatic) for access requests
 - API Products can be published or kept in draft status
 - API Owners can edit and delete API Products they own
 - The system enforces RBAC permissions for all API Product operations (create, read, update, delete)
 - API Products automatically sync to the Backstage catalog for discoverability