chore: Refactor using new Proxmox provider

pve01.wheatley.in/k8s-wheatley/modules/controlplane/variables.tf

@@ -1,15 +1,17 @@
-variable "controlplanes" {
+variable "controlplane" {
   description = "Control plane node configuration"
   type = object({
-    cpu           = number
-    memory        = number
-    disk          = string
-    storagepool   = string
-    talos_version = string
-    nodes = list(object({
-      name       = string
-      ip_address = string
-    }))
+    cpu                = number
+    memory             = number
+    disk               = string
+    storagepool        = string
+    talos_version      = string
+    cluster_name       = string
+    kubernetes_version = string
+    node_name          = string
+    node_ipv4_address  = string
+    cluster_endpoint   = string
+    ipv4_gateway       = string
   })
 }