Add npm publish CI workflow (#57)

Also upgrade to node 22, which bundles latest npm, to fix npm/cli#7564.

Author: ahdinosaur

.github/workflows/publish.yml

@@ -0,0 +1,39 @@
+name: Publish
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  npm:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write
+
+    steps:
+      - name: Checkout the commit
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          registry-url: 'https://registry.npmjs.org/'
+          node-version-file: '.nvmrc'
+          cache: 'npm'
+
+      - name: Setup turbo cache
+        uses: actions/cache@v4
+        with:
+          path: node_modules/.cache/turbo
+          key: ${{ runner.os }}-turbo-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-turbo-
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Publish to npm
+        run: npm publish --workspaces --provenance --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

.nvmrc

@@ -1 +1 @@
-20
+22.3.0