add driftless example

Signed-off-by: Jason Hall <jason@chainguard.dev>

driftlessaf/variables.tf

@@ -0,0 +1,20 @@
+variable "project_id" {
+  type        = string
+  description = "The GCP project ID."
+}
+
+variable "github_app_id" {
+  type        = string
+  description = "The GitHub App ID."
+}
+
+variable "team" {
+  type        = string
+  description = "Team label to apply to resources."
+  default     = ""
+}
+
+variable "secret_version_adder" {
+  type        = string
+  description = "User permitted to manage webhook secrets (e.g., user:you@company.biz)."
+}