feat(release): Add Harbor Helm repository configuration and update kustomization.yaml

Author: TheMeinerLP

infrastructure/clusters/feather-core/base-sources/harbor.yml

@@ -0,0 +1,8 @@
+apiVersion: source.toolkit.fluxcd.io/v1beta2
+kind: HelmRepository
+metadata:
+  name: harbor
+  namespace: flux-system
+spec:
+  interval: 5m
+  url: https://helm.goharbor.io

infrastructure/clusters/feather-core/base-sources/kustomization.yaml

@@ -11,4 +11,5 @@ resources:
   - smallstep.yml
   - jetstack.yml
   - bitnami.yml
-  - spegel.yaml
+  - spegel.yaml
+  - harbor.yml