Add documentation for optional service/port in ingress path configuration

[Copilot]

The ingress-route.yaml template supports optional service and port properties per path, but this wasn't documented in values.yaml, making the configuration structure unclear.

Changes:

• Added inline documentation explaining optional service and port properties in path configuration
• Documented default behavior (service defaults to laravel.fullname, port defaults to service.port)
• Added commented example showing custom service/port usage

Example configuration:

ingress:
  hosts:
    - host: api.example.com
      paths:
        - path: /          # Uses default service and port
        - path: /api
          service: custom-api-service
          port: 8080

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