ci: [DX-3555] Add Azure cleanup workflow (#712)

.github/workflows/clean-azure-blob.yml

@@ -0,0 +1,28 @@
+name: clean-azure-blob
+on:
+  workflow_dispatch:
+
+permissions:
+  id-token: write # This is required for requesting the JWT
+  contents: read # This is required for actions/checkout
+
+jobs:
+  deploy_widgetbook_azure:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Azure login
+        uses: azure/login@v2
+        with:
+          client-id: ${{ secrets.AZURE_CLIENT_ID}}
+          tenant-id: ${{ secrets.AZURE_TENANT_ID }}
+          subscription-id: ${{ secrets.AZURE_SUBSCRIPTION_ID }}
+
+      - name: Clean widgetbook blob folder
+        uses: azure/CLI@v2
+        with:
+          inlineScript: |
+            az storage blob delete-batch --source mews-ui-widgetbook --account-name ${{ secrets.AZURE_ACCOUNT_NAME }} --auth-mode login --dryrun