ci: Add pkg-pr-new previews (#5648)

Author: lachlancollins

.github/workflows/pr.yml

@@ -36,3 +36,17 @@ jobs:
       - name: Stop Nx Agents
         if: ${{ always() }}
         run: npx nx-cloud stop-all-agents
+  preview:
+    name: Preview
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup Tools
+        uses: tanstack/config/.github/setup@main
+      - name: Build Packages
+        run: pnpm run build:all
+      - name: Publish Previews
+        run: pnpx pkg-pr-new publish --pnpm --compact './packages/*' --template './examples/*/*'