Add website built action

.github/workflows/website-build.yml

@@ -0,0 +1,14 @@
+on:
+  release:
+    types:
+      - published
+      - unpublished
+      - deleted
+jobs:
+  trigger-doc-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install HTTPie
+        run: sudo snap install --edge httpie
+      - name: Trigger website build
+        run: http --ignore-stdin POST ${{ secrets.PIE_WEB_VERCEL_HOOK }}