Implement bridges and fillout readme with current state

environments/nonprod/providers.tf

@@ -0,0 +1,7 @@
+provider "proxmox" {
+  endpoint  = var.proxmox_endpoint
+  api_token = var.proxmox_api_token
+
+  # Set to true if using a self-signed certificate (common on home labs)
+  insecure = var.proxmox_insecure
+}