feat: add metadata to helm chart (#737)

Fixes #596

.github/workflows/validate-semantic-pr.yml

@@ -33,6 +33,7 @@ jobs:
             test
             deps
           scopes: |
+            helm-chart
             scheduler
             operator
             cert-manager

helm/chart/Chart.yaml

@@ -1,9 +1,34 @@
 apiVersion: v2
 name: keptn-lifecycle-toolkit
 description: A Helm chart for Keptn Lifecycle Toolkit, a set of tools to enable cloud-native application lifecycle management
+icon: "https://raw.githubusercontent.com/cncf/artwork/master/projects/keptn/icon/color/keptn-icon-color.svg"
+home: https://keptn.sh
+sources:
+  - "https://github.com/keptn/lifecycle-toolkit"
+keywords:
+  - cloud-native
+  - lifecycle
+  - lifecycle-management
+  - application-lifecycle
+  - application-lifecycle-management
+  - orchestration
+  - keptn
+  - operator
+  - pre-deployment
+  - post-deployment
+  - evaluation
+annotations:
+  artifacthub.io/links: |
+    - name: support
+      url: https://github.com/keptn/lifecycle-toolkit/issues/new
+    - name: community
+      url: https://slack.keptn.sh/
+  artifacthub.io/license: "Apache-2.0"
+  artifacthub.io/operator: "true"
+  artifacthub.io/operatorCapabilities: "Full Lifecycle"
 
+kubeVersion: ">= 1.24.0"
 type: application
-
 version: 0.1.0
 
 # This is the version number of the application being deployed. This version number should be