add new action for pull request previews

.github/workflows/pull-request-preview.yml

@@ -0,0 +1,44 @@
+on: pull_request
+name: pull request preview
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+      - name: setup PNPM
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+      - name: setup node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'pnpm'
+      - name: install dependencies
+        run: pnpm i
+      - name: build page
+        run: pnpm build
+
+      - name: publish to cloudflare pages
+        id: cloudflare-publish
+        uses: cloudflare/pages-action@v1
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          projectName: rosebud
+          directory: dist
+          branch: pull-${{ github.event.number }}
+
+      - name: add link in footer
+        uses: devindford/Append_PR_Comment@v1.1.3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          body-template: |
+            ---
+            [preview this pull request!](${{ steps.cloudflare-publish.outputs.url }})