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/k3s/forgejo/deployment.yaml

@@ -0,0 +1,68 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: forgejo-deployment
+  namespace: forgejo
+  labels:
+    app: forgejo-app
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: forgejo-app
+  template:
+    metadata:
+      labels:
+        app: forgejo-app
+    spec:
+      terminationGracePeriodSeconds: 10
+      containers:
+      - name: forgejo
+        image: codeberg.org/forgejo/forgejo:11.0.6
+        imagePullPolicy: IfNotPresent
+        env:
+        - name: FORGEJO__repository__ENABLE_PUSH_CREATE_USER
+          value: "true"
+        - name: FORGEJO__server__ROOT_URL
+          value: "https://frg.headshed.dev/"
+        - name: FORGEJO__repository__DEFAULT_BRANCH
+          value: "main"
+        - name: FORGEJO__server__LFS_START_SERVER
+          value: "true"
+        - name: FORGEJO__security__INSTALL_LOCK
+          value: "true"
+        - name: FORGEJO__service__DISABLE_REGISTRATION
+          value: "false"
+        ports:
+        - name: http
+          containerPort: 3000
+          protocol: TCP
+        - name: ssh
+          containerPort: 22
+        resources:
+          requests:
+            memory: "128Mi"
+            cpu: "100m"
+          limits:
+            memory: "256Mi"
+            cpu: "500m"        
+        tty: true
+        volumeMounts:
+        - name: forgejo-data
+          mountPath: /data
+        # - name: forgejo-timezone
+        #   mountPath: /etc/timezone
+        # - name: forgejo-localtime
+        #   mountPath: /etc/localtime
+      volumes:
+      - name: forgejo-data
+        persistentVolumeClaim:
+          claimName: forgejo-data-pvc
+      # - name: forgejo-timezone
+      #   configMap:
+      #     name: forgejo-timezone
+      # - name: forgejo-localtime
+      #   configMap:
+      #     name: forgejo-localtime