feat(terraform): remove websites module and add m3uproxy and nginx modules

- Deleted the websites module from the Terraform configuration.
- Introduced a new m3uproxy module with resources for Kubernetes namespace, secrets, config maps, deployments, services, and cron jobs.
- Added configuration files for m3uproxy, including JSON and playlist resources.
- Created a new nginx module with resources for Kubernetes namespace, services, config maps, deployments, and ingress.
- Added necessary variables for both m3uproxy and nginx modules.
- Updated provider configurations for m3uproxy and nginx modules to specify required versions.

terraform/modules/rustdesk/provider.tf

@@ -0,0 +1,9 @@
+terraform {
+  required_version = "~>1.8"
+  required_providers {
+    kubernetes = {
+      source  = "hashicorp/kubernetes"
+      version = "~>2.18"
+    }
+  }
+}