🚧 Deployment Notifications (#628)

* add initial success flow

* add output of available events

.github/workflows/notify-slack-on-failure.yml

@@ -23,3 +23,10 @@ jobs:
           footer: "Linked Repo <${{github.server_url}}/${{github.repository}}|${{github.repository}}> | <${{github.server_url}}/${{github.repository}}/actions/runs/${{github.event.workflow_run.id}}|View Failure>"
         env:
           SLACK_WEBHOOK_URL: ${{ secrets.SLACK_ALERT_WEBHOOK }}
+
+  on-success:
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success'
+    steps:
+      - run: ${{ tojson(github.event) }}
+        shell: cat {0}