Add Netbird.io provider

provider.tf

@@ -11,6 +11,9 @@ terraform {
             source = "Telmate/proxmox"
             version = "3.0.1-rc4"
         }
+        netbird = {
+            source = "registry.terraform.io/netbirdio/netbird"
+        }
     }
 }
 
@@ -36,3 +39,15 @@ provider "proxmox" {
     pm_tls_insecure = true
 
 }
+
+# Netbird.io provider for mesh vpn
+
+variable "netbird_token" {
+  sensitive   = true
+  description = "NetBird Management Access Token"
+}
+
+provider "netbird" {
+  token          = var.netbird_token        # Required
+  management_url = "https://api.netbird.io" # Optional, defaults to this value
+}