feat(k8s/gitea): add Gitea with PostgreSQL, backups, and Authelia OIDC

kubernetes/app/gitea/service-db.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: gitea-db
+  namespace: gitea
+spec:
+  clusterIP: None
+  selector:
+    app: gitea-db
+  ports:
+    - port: 5432
+      targetPort: 5432