feat: move kubernetes dir into templates to support jinja2 across all files (#831)

kubernetes/flux/repositories/helm/kustomization.yaml

@@ -1,19 +0,0 @@
----
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-resources:
-  - ./bitnami.yaml
-  - ./bjw-s.yaml
-  - ./cilium.yaml
-  - ./coredns.yaml
-  - ./external-dns.yaml
-  - ./grafana.yaml
-  - ./hajimari.yaml
-  - ./ingress-nginx.yaml
-  - ./jetstack.yaml
-  - ./k8s-gateway.yaml
-  - ./kubernetes-dashboard.yaml
-  - ./metrics-server.yaml
-  - ./prometheus-community.yaml
-  - ./stakater.yaml
-  - ./weave-gitops.yaml