docs: add organization resource examples for Terraform Registry

- Add examples/resources/towerops_organization/resource.tf
- Update examples/main.tf to include organization resource
- Terraform Registry will auto-generate docs from these examples

examples/main.tf

@@ -16,6 +16,12 @@ provider "towerops" {
   token = var.towerops_api_token
 }
 
+# Manage organization settings
+resource "towerops_organization" "main" {
+  name      = "My Organization"
+  use_sites = true
+}
+
 # Create a site
 resource "towerops_site" "main_office" {
   name           = "Main Office"

examples/resources/towerops_organization/resource.tf

@@ -0,0 +1,4 @@
+resource "towerops_organization" "example" {
+  name      = "ACME Corporation"
+  use_sites = true
+}