fix: operator defaults

[mohammedabdulwahhab]

Overview:

• Set reasonable defaults for frontend and worker components for DGDs
• Change componentType of frontend component from main -> frontend

Summary by CodeRabbit

• New Features

  • Automatic defaults for Frontend and Worker pods (health probes, ports, and resource presets).
  • Controller now creates services/ingress for Frontend components.
  • Improved backend detection and pod spec generation.

• Refactor

  • Reclassified component type from “main” to “frontend” across deployments and operator API.
  • Introduced role/backend abstractions for cleaner configuration.

• Chores

  • Updated example manifests to use componentType: frontend.
  • Tests updated and stabilized; removed obsolete env/port wiring (e.g., DYNAMO_PORT).