Enhance ingress_factory with full_host, extra_middlewares, and
skip_default_rate_limit variables. Fix TLS hosts bug to use
effective_host. Migrate 13 services from raw kubernetes_ingress_v1
resources to centralized ingress_factory module calls, removing
manual rybbit middleware CRDs where the factory now handles them.
- Remove nginx-specific ingress variables (use_proxy_protocol, proxy_timeout, additional_configuration_snippet)
- Update ingress annotations to use Traefik middleware CRDs
- Delete nginx-ingress module (replaced by traefik)
- Add new traefik middleware.tf for shared middleware definitions
- Update service modules to work with new ingress_factory interface
