Add Google Cloud K3s infrastructure support

- Add Terraform configuration for GCP instance and storage
- Add startup script for K3s installation and configuration
- Add pipeline scripts for deployment and management
- Add Forgejo deployment manifests and configuration

gcloud/tf/vars.tf

@@ -0,0 +1,28 @@
+// Env vars
+// ----------------------------------
+
+variable "project_name" {
+  type = string
+}
+
+variable "env" {
+  type        = string
+  default     = "dev"
+  description = "Environment"
+}
+
+variable "region" {
+  type        = string
+  description = "GCP Region"
+}
+
+variable "zone" {
+  type        = string
+  description = "GCP Zone"
+}
+
+variable "app_name" {
+  type        = string
+  description = "Application name"
+}
+