Migrate all service modules from nginx-ingress to Traefik

- 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

modules/kubernetes/dawarich/main.tf

@@ -323,16 +323,5 @@ module "ingress" {
   namespace       = kubernetes_namespace.dawarich.metadata[0].name
   name            = "dawarich"
   tls_secret_name = var.tls_secret_name
-  extra_annotations = {
-    "nginx.ingress.kubernetes.io/limit-connections" : 100
-    "nginx.ingress.kubernetes.io/limit-rps" : 50
-    "nginx.ingress.kubernetes.io/limit-rpm" : 1000
-    "nginx.ingress.kubernetes.io/limit-burst-multiplier" : 500
-    "nginx.ingress.kubernetes.io/limit-rate-after" : 1000
-    "nginx.ingress.kubernetes.io/configuration-snippet" = <<-EOF
-        limit_req_status 429;
-        limit_conn_status 429;
-      EOF
-  }
-  rybbit_site_id = "0abfd409f2fb"
+  rybbit_site_id  = "0abfd409f2fb"
 }