🧹 update helm docs and add release instructions (#121)

Signed-off-by: Harsha <harshaisgud@gmail.com>

Author: harshaisgud

RELEASE.md

@@ -0,0 +1,15 @@
+# Releasing helm chart
+
+Mondoo Operator helm chart has been autogenerated using the [helmify](https://github.com/arttor/helmify) tool.
+The CI uses [chart-releaser-action](https://github.com/helm/chart-releaser-action) to self host the charts using github pages.
+
+The following steps need to be followed to release helm chart.
+
+## Requirements
+1. Update Chart.yaml in the charts/mondoo-operator repository with the latest appVersion.
+2. Update Chart.yaml in the charts/mondoo-operator repository with the corresponding version.
+
+
+# Helm Chart Release Workflow
+
+Helm chart release action is executed on every push to main . It checks each chart in the charts folder, and whenever there's a new chart version, creates a corresponding GitHub release named for the chart version, adds Helm chart artifacts to the release, and creates or updates an index.yaml file with metadata about those releases, which is then hosted on GitHub Pages. 

docs/user-manual-helm.md

@@ -20,7 +20,8 @@ minikube start
 Next let us deploy the operator application:
 
 ```bash
-helm install mondoo-operator ./chart --namespace mondoo-operator-system --create-namespace
+helm repo add mondoo https://mondoohq.github.io/mondoo-operator
+helm install mondoo-operator mondoo/mondoo-operator --namespace mondoo-operator-system --create-namespace
 ```
 
 > NOTE: Make sure helm is configured to use minikube