feat: Move webhooks to add-ons directory

Signed-off-by: Devin Buhl <devin@buhl.casa>

cluster/flux/config/crds/kube-prometheus-stack.yaml

@@ -1,30 +0,0 @@
----
-apiVersion: source.toolkit.fluxcd.io/v1beta2
-kind: GitRepository
-metadata:
-  name: kube-prometheus-stack
-  namespace: flux-system
-spec:
-  interval: 12h
-  url: https://github.com/prometheus-community/helm-charts.git
-  ref:
-    # renovate: registryUrl=https://prometheus-community.github.io/helm-charts chart=kube-prometheus-stack
-    tag: kube-prometheus-stack-42.1.0
-  ignore: |
-    # exclude all
-    /*
-    # include crd directory
-    !/charts/kube-prometheus-stack/crds
----
-apiVersion: kustomize.toolkit.fluxcd.io/v1beta2
-kind: Kustomization
-metadata:
-  name: kube-prometheus-stack-crds
-  namespace: flux-system
-spec:
-  interval: 30m
-  prune: false
-  wait: true
-  sourceRef:
-    kind: GitRepository
-    name: kube-prometheus-stack

cluster/flux/config/crds/kustomization.yaml

@@ -1,6 +0,0 @@
----
-apiVersion: kustomize.config.k8s.io/v1beta1
-kind: Kustomization
-namespace: flux-system
-resources:
-  - ./kube-prometheus-stack.yaml

cluster/flux/config/kustomization.yaml

@@ -4,4 +4,3 @@ kind: Kustomization
 resources:
   - ./flux-installation.yaml
   - ./flux-cluster.yaml
-  - ./crds