feat: Helm chart contribution for argocd-notifications (#365)

* Helm chart contribution for argocd-notifications

The following chart is a contribution from work done at https://github.com/Bandwidth/ to facilitate installing https://github.com/argoproj-labs/argocd-notifications via Helm chart based on https://github.com/argoproj-labs/argocd-notifications/blob/master/manifests/install.yaml

charts/argocd-notifications/templates/role.yaml

@@ -0,0 +1,27 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: {{ include "argocd-notifications.name" . }}-controller
+  labels:
+    {{- include "argocd-notifications.labels" . | nindent 4 }}
+rules:
+- apiGroups:
+  - argoproj.io
+  resources:
+  - applications
+  - appprojects
+  verbs:
+  - get
+  - list
+  - watch
+  - update
+  - patch
+- apiGroups:
+  - ""
+  resources:
+  - secrets
+  - configmaps
+  verbs:
+  - get
+  - list
+  - watch