feat: add bare bones Proxmox Terraform scaffold

Adds provider config, variables, and an example tfvars file using
the bpg/proxmox provider. No resources are managed yet — existing
Proxmox setup is untouched.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

main.tf

@@ -0,0 +1,19 @@
+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    proxmox = {
+      source  = "bpg/proxmox"
+      version = "~> 0.73"
+    }
+  }
+}
+
+provider "proxmox" {
+  endpoint = var.proxmox_endpoint
+  username = var.proxmox_username
+  password = var.proxmox_password
+
+  # Set to true if using a self-signed certificate (common on home labs)
+  insecure = var.proxmox_insecure
+}

terraform.tfvars.example

@@ -0,0 +1,7 @@
+# Copy this file to terraform.tfvars and fill in your values.
+# terraform.tfvars is gitignored to keep secrets out of version control.
+
+proxmox_endpoint = "https://192.168.1.10:8006/"
+proxmox_username = "terraform@pve"
+proxmox_password = "changeme"
+proxmox_insecure = true

variables.tf

@@ -0,0 +1,21 @@
+variable "proxmox_endpoint" {
+  description = "URL of the Proxmox API endpoint, e.g. https://192.168.1.10:8006/"
+  type        = string
+}
+
+variable "proxmox_username" {
+  description = "Proxmox user in the form user@realm, e.g. terraform@pve"
+  type        = string
+}
+
+variable "proxmox_password" {
+  description = "Password for the Proxmox user"
+  type        = string
+  sensitive   = true
+}
+
+variable "proxmox_insecure" {
+  description = "Skip TLS certificate verification (set true for self-signed certs)"
+  type        = bool
+  default     = true
+}