Add gh action for publishing

.github/workflows/publish.yaml

@@ -0,0 +1,27 @@
+name: Publish to npm
+
+on:
+  push:
+    tags:
+      - "v*.*.*" # Matches v1.0.0, v2.0.0, etc.
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          registry-url: "https://registry.npmjs.org/"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm install
+      - run: npm test
+      - name: Publish to npm
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}