feat(shared): Add automatic helmrelease serviceaccount patching

shared/components/flux-namespace-admin/helmrelease.yaml

+- op: add
+  path: /spec/serviceAccountName
+  value: flux-reconciler
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shared/components/flux-namespace-admin/kustomization.yaml

@@ -3,4 +3,10 @@ kind: Component
 
 resources:
   - serviceaccount.yaml
-  - rolebinding.yaml
\ No newline at end of file
+  - rolebinding.yaml
+
+patches:
+  - path: helmrelease.yaml
+    target:
+      kind: HelmRelease
+      annotationSelector: "flux-namespace-admin.kustomize.si-infra.de/exclude-helmrelease!=true"
\ No newline at end of file