Added creation of sealed-secrets namespace (#6)

Co-authored-by: Marcel Straub <m@straubs.eu>
Reviewed-on: #6

02-k8s/infra/controllers/sealed-secrets/kustomization.yaml

@@ -1,6 +1,9 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
+resources:
+  - ns.yaml
+
 helmCharts:
   - name: sealed-secrets
     repo: oci://registry-1.docker.io/bitnamicharts

02-k8s/infra/controllers/sealed-secrets/ns.yaml

@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: sealed-secrets