ci: update npm package publication

Author: JavierCane

.github/workflows/ci.yml

@@ -33,4 +33,30 @@ jobs:
 
       - name: ✅ Run tests
         run: npm run test
-        
+
+  publish:
+    name: 📦 Publish
+    runs-on: ubuntu-latest
+    needs: lint-test
+    if: github.ref == 'refs/heads/main'
+
+    steps:
+      - name: 👍 Checkout
+        uses: actions/checkout@v4
+
+      - name: 🐢 Setup node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: 📥 Install Dependencies
+        run: npm install
+
+      - name: 🛠️ Build
+        run: npm run build
+
+      - name: 🚀 Publish to npm
+        uses: JS-DevTools/npm-publish@v3
+        with:
+          token: ${{ secrets.NPM_TOKEN }}