feat: trigger doc indexing on tags

.github/workflows/main.yml

@@ -0,0 +1,21 @@
+name: Index doc on tag
+
+on:
+  push:
+    tags:
+      - v*
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  index-doc:
+    name: Index doc
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - name: Doc indexing webhook for tag
+        id: trigger-index
+        run: |
+          TAG=${GITHUB_REF#refs/*/}
+          curl -X POST -H "Content-Type: application/json" -d "{\"tag\": \"$TAG\"}" https://us.kestra.cloud/api/v1/kestra-tech/executions/webhook/product/doc-to-storage/${{ secrets.DOC_INDEXING_WEBHOOK }}