feat: GitHub CI Changes

- Added test
- Package and archive

.github/workflows/build_and_publish.yml

@@ -17,6 +17,15 @@ jobs:
           scope: '@unlock-music'
       - name: 📦 Install Dependencies
         run: npm ci
+      - name: 🧾 Test
+        run: npm test
+      - name: 🔥 Build Package
+        run: npm pack
+      - name: 💾 Archive Package built
+        uses: actions/upload-artifact@v2
+        with:
+          name: package
+          path: '*.tgz'
       - name: 🚀 Publish Package
         run: npm publish
         if: startsWith(github.ref, 'refs/tags/v')