infra/terraform: add k8s module file for my portfolio

- added k8s module file for my portfolio manifest

infra/terraform/kubernetes/variables.tf

@@ -0,0 +1,35 @@
+# variables for minio backend configuration
+variable "minio_access_key" {
+  description = "MinIO access key"
+  type        = string
+}
+
+variable "minio_secret_key" {
+  description = "MinIO secret key"
+  type        = string
+}
+
+variable "minio_endpoint" {
+  description = "MinIO API endpoint"
+  type        = string
+}
+
+variable "portfolio_host" {
+  description = "Host for the portfolio application"
+  type        = string
+}
+
+variable "docker_registry_host" {
+  description = "Host for the Docker registry"
+  type        = string
+}
+
+variable "docker_username" {
+  description = "Docker registry username"
+  type        = string
+}
+
+variable "docker_password" {
+  description = "Docker registry password"
+  type        = string
+}