Add a cleanup script

tpls/hetzner-cleanup.yaml

@@ -0,0 +1,28 @@
+apiVersion: tekton.dev/v1beta1
+kind: Pipeline
+metadata:
+  generateName: hetzner-cleanup
+  namespace: "${SP_TEKTON_RUNTIME_NS}"
+spec:
+  params:
+    - name: namespace
+      value: "${SP_CUSTOMER_ID}"
+    - name: environment
+      value: "${SP_ENVIRONMENT}"
+  tasks:
+    - name: cleanup-hetzner-infra
+      retries: 3
+      taskRef:
+        resolver: cluster
+        params:
+          - name: kind
+            value: task
+          - name: name
+            value: cleanup-hetzner-infra
+          - name: namespace
+            value: tekton-pipelines
+      params:
+        - name: environment
+          value: $(params.environment)
+        - name: namespace
+          value: $(params.namespace)