add pr workflow

.forgejo/workflows/pr.yml

@@ -0,0 +1,14 @@
+on: [pull_request]
+jobs:
+  testbuild:
+    runs-on: docker
+    container.image: node:20-bookworm
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm install && npm run build
+        name: NPM Install and Build
+      - name: Upload output
+        uses: actions/upload-artifact@v3
+        with:
+          name: outputsite
+          path: .vercel/output/static