make pkg pr flow for PRs

Author: 45930

.github/workflows/pkg_pr_release.yml

@@ -0,0 +1,41 @@
+name: pkg.pr preview release
+
+on:
+  pull_request:
+    # Run the workflow when labels are added to a PR or when the PR is updated.
+    types:
+      - opened
+      - synchronize
+      - labeled
+      - reopened
+
+permissions:
+  # Allow the workflow to add comments to pull requests when publishing.
+  pull-requests: write
+
+jobs:
+  Pkg-pr-new:
+    # Only run this job when the pull request contains the pkg‑pr‑release label.
+    if: github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'pkg-pr-release')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Restore repository
+        uses: actions/cache@v4
+        with:
+          path: .
+          key: repo-${{ github.sha }}
+      - name: Setup Node.JS 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - name: build
+        uses: ./.github/actions/build
+      - name: Build o1js and mina-signer
+        run: |
+          npm run prepublish:full
+          cd src/mina-signer
+          npm ci
+          npm run prepublish:full
+      - name: Publish o1js and mina-signer on pkg-pr-new
+        run: npx pkg-pr-new publish ./ ./src/mina-signer # Enable `--compact` once published to NPM with `repository` in package.json