Add auth exporter module: implement Kubernetes resources, exporter logic, and testing

terraform/modules/utils/auth-exporter/variables.tf

@@ -0,0 +1,16 @@
+variable "tag" {
+  description = "Python image tag"
+  type        = string
+  default     = "python:3.12-slim"
+}
+
+variable "namespace" {
+  description = "Kubernetes namespace to deploy the prometheus exporter"
+  type        = string
+  default     = "kube-system"
+}
+
+variable "persistent_folder" {
+  description = "The path to the persistent folder"
+  type        = string
+}