Add terraform module

Terraform is used to manage the VMs on the Proxmox host `busch`.

terraform/busch/modules/proxmox-vm/variables.tf

@@ -0,0 +1,64 @@
+variable "vmid" {
+  description = "ID of the VM to create"
+  type        = string
+}
+
+variable "name" {
+  description = "Name of the VM to create"
+  type        = string
+}
+
+variable "description" {
+  description = "Description of the VM to create"
+  type        = string
+  default     = null
+  nullable    = true
+}
+
+variable "target_node" {
+  description = "Name of the target node to create the VM on"
+  type        = string
+}
+
+variable "memory" {
+  description = "Memory to allocate for the VM"
+  type        = string
+}
+
+variable "cpu_cores" {
+  description = "Number of CPU cores to allocate for the VM"
+  type        = number
+}
+
+variable "disk_storage" {
+  description = "Name of the storage to store the disk on"
+  type        = string
+  default     = "local"
+}
+
+variable "disk_size" {
+  description = "Size of the primary disk"
+  type        = string
+}
+
+variable "iso_path" {
+  description = "Path of the ISO to use to install an OS"
+  type        = string
+}
+
+variable "startup_order" {
+  description = "Order number of the VM in the startup chain"
+  type        = number
+}
+
+variable "startup_delay" {
+  description = "Startup delay in seconds"
+  type        = number
+  default     = -1
+}
+
+variable "mapped_pcie_devices" {
+  description = "PCI mappings"
+  type        = list(string)
+  default     = []
+}