fix: add cert-manager addon yaml (#5064)

deploy/cert-manager/templates/NOTES.txt

@@ -2,6 +2,4 @@ cert-manager github:
 https://github.com/cert-manager/cert-manager
 
 How to install:
-helm install cert cert-manager
-or
-kbcli addom enable cert-manager
+`kbcli addon enable cert-manager` or `helm install cert ./deploy/cert-manager`

deploy/helm/templates/addons/cert-manager-addon.yaml

@@ -0,0 +1,30 @@
+apiVersion: extensions.kubeblocks.io/v1alpha1
+kind: Addon
+metadata:
+  name: cert-manager
+  labels:
+    {{- include "kubeblocks.labels" . | nindent 4 }}
+    "kubeblocks.io/provider": community
+  {{- if .Values.keepAddons }}
+  annotations:
+    helm.sh/resource-policy: keep
+  {{- end }}
+spec:
+  description: 'cert-manager adds certificates and certificate issuers as resource types in Kubernetes clusters, and simplifies the process of obtaining, renewing and using those certificates. '
+
+  type: Helm
+
+  helm:
+    {{- include "kubeblocks.addonChartLocationURL" ( dict "name" "cert-manager" "version" (default .Chart.Version .Values.versionOverride) "values" .Values) | indent 4 }}
+    {{- include "kubeblocks.addonChartsImage" . | indent 4 }}
+
+    installOptions:
+     {{- if hasPrefix "oci://" .Values.addonChartLocationBase }}
+      version: {{ default .Chart.Version .Values.versionOverride }}
+     {{- end }}
+
+  installable:
+    autoInstall: false
+
+  defaultInstallValues:
+    - enabled: true

deploy/helm/templates/addons/neon-addon.yaml

@@ -10,7 +10,7 @@ metadata:
     helm.sh/resource-policy: keep
   {{- end }}
 spec:
-  description: 'Neon is a fully managed serverless PostgreSQL with a generous free tier. Neon separates storage and compute and offers modern developer features such as serverless, branching, bottomless storage, and more. '
+  description: 'Neon is a fully managed serverless PostgreSQL with a generous free tier. Neon separates storage and compute and offers modern developer features such as serverless, branching, bottomless storage, and more. Before deploying neon, you must execute `kbcli addon enable cert-manager` command to deploy cert-manager.'
 
   type: Helm